Lindsey L Beebe (Johnston) | The University of Georgia (original) (raw)

Papers by Lindsey L Beebe (Johnston)

Research paper thumbnail of Control of dimensionality through nitrogen donor disposition in divalent metal perchlorate bis(pyridylmethyl)piperazine coordination polymers

Inorganica Chimica Acta, Aug 1, 2009

Slow diffusion of aqueous solutions of metal perchlorates with alcoholic solutions of bis(4-pyrid... more Slow diffusion of aqueous solutions of metal perchlorates with alcoholic solutions of bis(4-pyridylmethyl)piperazine (4-bpmp) or bis(3-pyridylmethyl)piperazine (3-bpmp) afforded crystalline coordination polymer phases whose dimensionality and topology is determined largely by the pyridyl nitrogen donor disposition within the imine components. {[M(H2O)4(4-bpmp)](ClO4)2·4-bpmp·4H2O}n (M=Co, 1-Co; M=Zn, 1-Zn) are isostructural, displaying cationic [M(H2O)4(4-bpmp)]n2n+ 1-D coordination polymer chains connected through extensive hydrogen-bonding pathways involving unligated

Research paper thumbnail of Effect of pendant arm length and nitrogen donor disposition on the topology of luminescent cadmium phenylenedicarboxylate coordination polymers with bis(pyridylmethyl)piperazine co-ligands

Inorganica Chimica Acta, 2010

Hydrothermal synthesis has afforded divalent cadmium coordination polymers containing bis(pyridyl... more Hydrothermal synthesis has afforded divalent cadmium coordination polymers containing bis(pyridylmethyl)piperazine (bpmp) tethers and either phenylenediacetate (phda) or phenylenedipropionate (phdp) ligands. {[Cd(1,4-phda)(4-bpmp)]Á1.5H 2 O} n (1) displays a (4,4)-grid layered structure based on 4-connected {Cd 2 O 2 } dimeric units. Extension of the pendant arms generated {[Cd(1,4-phdp)(H4bpmp)](ClO 4 )Á3.5H 2 O} n (2, phdp = phenylenedipropionate), which possesses a rare (3,6) 2D trigonal lattice based on 6-connected {Cd 2 O 2 } dimers. Changing the nitrogen donor atom disposition by using 3bpmp as the nitrogen co-ligand yielded [Cd(1,4-phdp)(3-bpmp)(H 2 O)] n (3), which crystallizes in a 3-fold interpenetrated achiral diamondoid lattice. [Cd(1,3-phda)(4-bpmp)] n (4) adopts a very similar structure to that of 1. Complexes 1-4 undergo blue-violet luminescence upon exposure to ultraviolet radiation.

Research paper thumbnail of Synthesis and structure of a bimetallic hybrid inorganic/organic layered coordination polymer with an octamolybdate cluster variant trapped between the alpha and delta isomeric forms

Solid State Sci, 2007

Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under ... more Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under basic conditions afforded purple crystals of {[Cu(4-phpyr)4]2(Mo8O26)·4-phpyr} (1), which were analyzed by spectroscopy and single crystal X-ray diffraction. The asymmetric octamolybdate clusters in 1 adopt an intermediate structural variant between the known α and δ isomeric forms, with four octahedral and three tetrahedral molybdenum coordination spheres, along

Research paper thumbnail of Synthesis and structure of a bimetallic hybrid inorganic/organic layered coordination polymer with an octamolybdate cluster variant trapped between the α and δ isomeric forms

Solid State Sciences, Sep 1, 2007

Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under ... more Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under basic conditions afforded purple crystals of {[Cu(4-phpyr)4]2(Mo8O26)·4-phpyr} (1), which were analyzed by spectroscopy and single crystal X-ray diffraction. The asymmetric octamolybdate clusters in 1 adopt an intermediate structural variant between the known α and δ isomeric forms, with four octahedral and three tetrahedral molybdenum coordination spheres, along

Research paper thumbnail of Threats to belief in a just world: Effects of ingroup favoritism and victim status

Research paper thumbnail of Electrophysiological Recording in the Brain of Intact Adult Zebrafish

Journal of Visualized Experiments, 2013

Previously, electrophysiological studies in adult zebrafish have been limited to slice preparatio... more Previously, electrophysiological studies in adult zebrafish have been limited to slice preparations or to eye cup preparations and electrorentinogram recordings. This paper describes how an adult zebrafish can be immobilized, intubated, and used for in vivo electrophysiological experiments, allowing recording of neural activity. Immobilization of the adult requires a mechanism to deliver dissolved oxygen to the gills in lieu of buccal and opercular movement. With our technique, animals are immobilized and perfused with habitat water to fulfill this requirement. A craniotomy is performed under tricaine methanesulfonate (MS-222; tricaine) anesthesia to provide access to the brain. The primary electrode is then positioned within the craniotomy window to record extracellular brain activity. Through the use of a multitube perfusion system, a variety of pharmacological compounds can be administered to the adult fish and any alterations in the neural activity can be observed. The methodology not only allows for observations to be made regarding changes in neurological activity, but it also allows for comparisons to be made between larval and adult zebrafish. This gives researchers the ability to identify the alterations in neurological activity due to the introduction of various compounds at different life stages.

Research paper thumbnail of Two-Dimensional Monovalent Copper Halide Coordination Polymers IncorporatingAnti-Conformation 3,3′-Bipyridine

Zeitschrift für anorganische und allgemeine Chemie, 2008

... Lindsey L. Johnstona, Andrew J. Ursinia, Nathan P. Oiena, Matthew P. Desciakb, Randy S. Rarig... more ... Lindsey L. Johnstona, Andrew J. Ursinia, Nathan P. Oiena, Matthew P. Desciakb, Randy S. Rarig, Jr.c, Jon Zubietac, and Robert L. LaDucaa,* ... We thank Dr. Rui Huang for elemental analysis and Ms Subhashree Mallika Krish-nan for acquiring the IR spectra. SDG. References ...

Research paper thumbnail of Synthesis and structure of a bimetallic hybrid inorganic/organic layered coordination polymer with an octamolybdate cluster variant trapped between the α and δ isomeric forms

Solid State Sciences, 2007

Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under ... more Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under basic conditions afforded purple crystals of {[Cu(4-phpyr)4]2(Mo8O26)·4-phpyr} (1), which were analyzed by spectroscopy and single crystal X-ray diffraction. The asymmetric octamolybdate clusters in 1 adopt an intermediate structural variant between the known α and δ isomeric forms, with four octahedral and three tetrahedral molybdenum coordination spheres, along

Research paper thumbnail of Copper benzenedicarboxylate coordination polymers incorporating a long-spanning neutral co-ligand: Effect of anion inclusion and carboxylate pendant-arm length on topology and magnetism

Polyhedron, 2010

Three divalent copper coordination polymers containing aromatic dicarboxylate ligands and the lon... more Three divalent copper coordination polymers containing aromatic dicarboxylate ligands and the longspanning tethering imine bis(4-pyridylmethyl)piperazine (bpmp) have been prepared and structurally characterized. The length of the dicarboxylate pendant arms, carboxylate binding mode, and the inclusion of anionic components play a synergistic role in structure direction in this system. {[Cu(ip)(bpmp)(H 2 O)]Á5H 2 O} n (ip = isophthalate, 1) displays neutral (4,4) rectangular coordination polymer grids that stack in an ABCD repeat pattern. Use of the longer pendant arm dicarboxylate 1,3-phenylenediacetate (phda) resulted in {[Cu 2 (phda) 2 (bpmp)]ÁH 2 O} n (2), a 3-D network coordination polymer with primitive cubic topology that features strongly antiferromagnetically coupled (J = À331(1) cm À1 ) {Cu 2 (CO 2 ) 4 } paddlewheel units. In the presence of excess nitrate ions, {[Cu(phda)(Hbpmp)](NO 3 )Á3H 2 O} n (3) was isolated instead of 2; 3 manifests cationic 2-D coordination polymer layers built from weakly antiferromagnetically coupled (J = À2.43(1) cm À1 ) {Cu 2 O 2 } dimers linked through phda and protonated bpmp ligands. The striking difference in magnetic properties is ascribed to the equatorial-equatorial versus axial-equatorial bridging of copper coordination spheres in 2 and 3, respectively.

Research paper thumbnail of One- and two-dimensional cobalt benzenecarboxylate coordination polymers containing a kinked organodiimine: Synthesis, structure, and magnetic properties

Journal of Molecular Structure, 2008

Hydrothermal reaction of cobalt nitrate, phenylmalonic acid, and 4,4 0 -dipyridylamine (dpa) resu... more Hydrothermal reaction of cobalt nitrate, phenylmalonic acid, and 4,4 0 -dipyridylamine (dpa) resulted in formation of the coordination polymer [Co 2 (phac) 4 (dpa) 2 (H 2 O)] (1, phac = phenylacetate), where the phac ligand is formed in situ by the decarboxylation of phenylmalonic acid. Binuclear [Co 2 (phac) 4 (H 2 O)] units with both bridging and monodentate benzenecarboxylate ligands are linked into a twodimensional (4, 4) rhomboid grid network via dpa tethers within the structure of 1. Use of benzoate as the anionic component allowed the formation of [Co(benzoate) 2 (dpa) 2 ] (2), which manifested a dpa-linked one-dimensional chain coordination polymer motif with pendant monodentate and chelating carboxylates. Modest antiferromagnetic coupling was observed within the binuclear units in 1.

Research paper thumbnail of Control of dimensionality through nitrogen donor disposition in divalent metal perchlorate bis(pyridylmethyl)piperazine coordination polymers

Inorganica Chimica Acta, 2009

Slow diffusion of aqueous solutions of metal perchlorates with alcoholic solutions of bis(4-pyrid... more Slow diffusion of aqueous solutions of metal perchlorates with alcoholic solutions of bis(4-pyridylmethyl)piperazine (4-bpmp) or bis(3-pyridylmethyl)piperazine (3-bpmp) afforded crystalline coordination polymer phases whose dimensionality and topology is determined largely by the pyridyl nitrogen donor disposition within the imine components. {[M(H2O)4(4-bpmp)](ClO4)2·4-bpmp·4H2O}n (M=Co, 1-Co; M=Zn, 1-Zn) are isostructural, displaying cationic [M(H2O)4(4-bpmp)]n2n+ 1-D coordination polymer chains connected through extensive hydrogen-bonding pathways involving unligated

Research paper thumbnail of Effect of pendant arm length and nitrogen donor disposition on the topology of luminescent cadmium phenylenedicarboxylate coordination polymers with bis(pyridylmethyl)piperazine co-ligands

Inorganica Chimica Acta, 2010

Hydrothermal synthesis has afforded divalent cadmium coordination polymers containing bis(pyridyl... more Hydrothermal synthesis has afforded divalent cadmium coordination polymers containing bis(pyridylmethyl)piperazine (bpmp) tethers and either phenylenediacetate (phda) or phenylenedipropionate (phdp) ligands. {[Cd(1,4-phda)(4-bpmp)]Á1.5H 2 O} n (1) displays a (4,4)-grid layered structure based on 4-connected {Cd 2 O 2 } dimeric units. Extension of the pendant arms generated {[Cd(1,4-phdp)(H4bpmp)](ClO 4 )Á3.5H 2 O} n (2, phdp = phenylenedipropionate), which possesses a rare (3,6) 2D trigonal lattice based on 6-connected {Cd 2 O 2 } dimers. Changing the nitrogen donor atom disposition by using 3bpmp as the nitrogen co-ligand yielded [Cd(1,4-phdp)(3-bpmp)(H 2 O)] n (3), which crystallizes in a 3-fold interpenetrated achiral diamondoid lattice. [Cd(1,3-phda)(4-bpmp)] n (4) adopts a very similar structure to that of 1. Complexes 1-4 undergo blue-violet luminescence upon exposure to ultraviolet radiation.

Research paper thumbnail of One- and two-dimensional copper benzenedicarboxylate coordination polymers incorporating the flexible tethering diimine N,N′-bis(3-pyridylmethyl)piperazine: Synthesis, structure, and thermal properties

Inorganica Chimica Acta, 2008

A family of three copper benzenedicarboxylate coordination polymers has been constructed using th... more A family of three copper benzenedicarboxylate coordination polymers has been constructed using the conformationally flexible and hydrogen-bonding capable tethering ligand N,N 0 -bis(3-pyridylmethyl)piperazine (3-bpmp). These three coordination polymers have been characterized via single crystal X-ray diffraction, infrared spectroscopy and elemental and thermogravimetric analysis. {[Cu(ph)(Hph)(H3-bpmp)(H 2 O)] Á 3H 2 O} (1, ph = phthalate) manifests a 1-D chain motif held into a pseudo 3-D supramolecular structure through hydrogen bonding. While both {[Cu(ip)(3-bpmp)(H 2 O)] Á 2H 2 O} (2, ip = isophthalate) and [Cu(tp)(3-bpmp)] (3, tp = terephthalate) exhibit 2-D (4,4) rhomboid grid-like layers, they possess different layer stacking patterns and supramolecular interactions due to coordination geometry variances.

Research paper thumbnail of Cation control of dimensionality in isothiocyanate coordination polymers constructed from conformationally flexible 3,3′-bipyridine tethers

Inorganica Chimica Acta, 2007

Two isothiocyanate coordination polymers constructed from the conformationally flexible tethering... more Two isothiocyanate coordination polymers constructed from the conformationally flexible tethering ligand 3,3 0 -bipyridine (3,3 0 -bpy) and divalent metal cations have been prepared and characterized via single crystal X-ray diffraction, infrared spectroscopy and elemental analysis. [Co(NCS) 2 (3,3 0 -bpy) 2 ] (1), wherein the isothiocyanate ligands are coordinated in a trans fashion, manifests stacked two-dimensional (2-D) rhomboid grid layered motifs. In contrast, [Ni(NCS) 2 (3,3 0 -bpy) 2 ] (2) possesses a doubly interpenetrated adamantoid threedimensional (3-D) network despite the presence of trans isothiocyanate ligands. Thus, a metal cation-based control of coordination polymer dimensionality has been revealed in this system, reflective of different donor dispositions allowed by the conformational flexibility of the exobidentate 3,3 0 -bpy ligand. The 3-D framework of 2 decomposes at a temperature $40°C higher than the 2-D network of 1.

Research paper thumbnail of Divalent metal 1,3-phenylenediacetate coordination polymers with rigid or flexible dipyridyl tethers: Chains, layers, and interpenetrated networks

Inorganica Chimica Acta, 2010

... Karyn M. Blake a , Lindsey L. Johnston a , Maxwell A. Braverman a , Joseph H. Nettleman a , L... more ... Karyn M. Blake a , Lindsey L. Johnston a , Maxwell A. Braverman a , Joseph H. Nettleman a , Laura K. Sposato b and Robert L. LaDuca a , Corresponding Author Contact Information , E-mail The Corresponding Author , E-mail The Corresponding Author. ...

Research paper thumbnail of Cobalt phenylenediacetate coordination polymers containing long-spanning dipyridyl ligands: rectangular grid, primitive cubic, and 5-connected Archimedean layered net topologies

CrystEngComm, 2010

... Karyn M. Blake a, Lindsey L. Johnston a, Joseph H. Nettleman a, Ronald M. Supkowski b and Rob... more ... Karyn M. Blake a, Lindsey L. Johnston a, Joseph H. Nettleman a, Ronald M. Supkowski b and Robert L. LaDuca *a. a Lyman Briggs College and Department ... Adjacent [Co(1,4-phda)(4-bpmp)( H 2 O) 2 ] n (4,4) rhomboid layers stack along the a crystal direction in an AAA pattern ...

Research paper thumbnail of Light-Activated Serotonin for Exploring Its Action in Biological Systems

Chemistry & Biology, 2013

Research paper thumbnail of Control of dimensionality through nitrogen donor disposition in divalent metal perchlorate bis(pyridylmethyl)piperazine coordination polymers

Inorganica Chimica Acta, Aug 1, 2009

Slow diffusion of aqueous solutions of metal perchlorates with alcoholic solutions of bis(4-pyrid... more Slow diffusion of aqueous solutions of metal perchlorates with alcoholic solutions of bis(4-pyridylmethyl)piperazine (4-bpmp) or bis(3-pyridylmethyl)piperazine (3-bpmp) afforded crystalline coordination polymer phases whose dimensionality and topology is determined largely by the pyridyl nitrogen donor disposition within the imine components. {[M(H2O)4(4-bpmp)](ClO4)2·4-bpmp·4H2O}n (M=Co, 1-Co; M=Zn, 1-Zn) are isostructural, displaying cationic [M(H2O)4(4-bpmp)]n2n+ 1-D coordination polymer chains connected through extensive hydrogen-bonding pathways involving unligated

Research paper thumbnail of Effect of pendant arm length and nitrogen donor disposition on the topology of luminescent cadmium phenylenedicarboxylate coordination polymers with bis(pyridylmethyl)piperazine co-ligands

Inorganica Chimica Acta, 2010

Hydrothermal synthesis has afforded divalent cadmium coordination polymers containing bis(pyridyl... more Hydrothermal synthesis has afforded divalent cadmium coordination polymers containing bis(pyridylmethyl)piperazine (bpmp) tethers and either phenylenediacetate (phda) or phenylenedipropionate (phdp) ligands. {[Cd(1,4-phda)(4-bpmp)]Á1.5H 2 O} n (1) displays a (4,4)-grid layered structure based on 4-connected {Cd 2 O 2 } dimeric units. Extension of the pendant arms generated {[Cd(1,4-phdp)(H4bpmp)](ClO 4 )Á3.5H 2 O} n (2, phdp = phenylenedipropionate), which possesses a rare (3,6) 2D trigonal lattice based on 6-connected {Cd 2 O 2 } dimers. Changing the nitrogen donor atom disposition by using 3bpmp as the nitrogen co-ligand yielded [Cd(1,4-phdp)(3-bpmp)(H 2 O)] n (3), which crystallizes in a 3-fold interpenetrated achiral diamondoid lattice. [Cd(1,3-phda)(4-bpmp)] n (4) adopts a very similar structure to that of 1. Complexes 1-4 undergo blue-violet luminescence upon exposure to ultraviolet radiation.

Research paper thumbnail of Synthesis and structure of a bimetallic hybrid inorganic/organic layered coordination polymer with an octamolybdate cluster variant trapped between the alpha and delta isomeric forms

Solid State Sci, 2007

Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under ... more Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under basic conditions afforded purple crystals of {[Cu(4-phpyr)4]2(Mo8O26)·4-phpyr} (1), which were analyzed by spectroscopy and single crystal X-ray diffraction. The asymmetric octamolybdate clusters in 1 adopt an intermediate structural variant between the known α and δ isomeric forms, with four octahedral and three tetrahedral molybdenum coordination spheres, along

Research paper thumbnail of Synthesis and structure of a bimetallic hybrid inorganic/organic layered coordination polymer with an octamolybdate cluster variant trapped between the α and δ isomeric forms

Solid State Sciences, Sep 1, 2007

Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under ... more Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under basic conditions afforded purple crystals of {[Cu(4-phpyr)4]2(Mo8O26)·4-phpyr} (1), which were analyzed by spectroscopy and single crystal X-ray diffraction. The asymmetric octamolybdate clusters in 1 adopt an intermediate structural variant between the known α and δ isomeric forms, with four octahedral and three tetrahedral molybdenum coordination spheres, along

Research paper thumbnail of Threats to belief in a just world: Effects of ingroup favoritism and victim status

Research paper thumbnail of Electrophysiological Recording in the Brain of Intact Adult Zebrafish

Journal of Visualized Experiments, 2013

Previously, electrophysiological studies in adult zebrafish have been limited to slice preparatio... more Previously, electrophysiological studies in adult zebrafish have been limited to slice preparations or to eye cup preparations and electrorentinogram recordings. This paper describes how an adult zebrafish can be immobilized, intubated, and used for in vivo electrophysiological experiments, allowing recording of neural activity. Immobilization of the adult requires a mechanism to deliver dissolved oxygen to the gills in lieu of buccal and opercular movement. With our technique, animals are immobilized and perfused with habitat water to fulfill this requirement. A craniotomy is performed under tricaine methanesulfonate (MS-222; tricaine) anesthesia to provide access to the brain. The primary electrode is then positioned within the craniotomy window to record extracellular brain activity. Through the use of a multitube perfusion system, a variety of pharmacological compounds can be administered to the adult fish and any alterations in the neural activity can be observed. The methodology not only allows for observations to be made regarding changes in neurological activity, but it also allows for comparisons to be made between larval and adult zebrafish. This gives researchers the ability to identify the alterations in neurological activity due to the introduction of various compounds at different life stages.

Research paper thumbnail of Two-Dimensional Monovalent Copper Halide Coordination Polymers IncorporatingAnti-Conformation 3,3′-Bipyridine

Zeitschrift für anorganische und allgemeine Chemie, 2008

... Lindsey L. Johnstona, Andrew J. Ursinia, Nathan P. Oiena, Matthew P. Desciakb, Randy S. Rarig... more ... Lindsey L. Johnstona, Andrew J. Ursinia, Nathan P. Oiena, Matthew P. Desciakb, Randy S. Rarig, Jr.c, Jon Zubietac, and Robert L. LaDucaa,* ... We thank Dr. Rui Huang for elemental analysis and Ms Subhashree Mallika Krish-nan for acquiring the IR spectra. SDG. References ...

Research paper thumbnail of Synthesis and structure of a bimetallic hybrid inorganic/organic layered coordination polymer with an octamolybdate cluster variant trapped between the α and δ isomeric forms

Solid State Sciences, 2007

Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under ... more Hydrothermal combination of CuSO4, MoO3, and 4-phenylpyridine (4-phpyr) in a 1:4:4.5 ratio under basic conditions afforded purple crystals of {[Cu(4-phpyr)4]2(Mo8O26)·4-phpyr} (1), which were analyzed by spectroscopy and single crystal X-ray diffraction. The asymmetric octamolybdate clusters in 1 adopt an intermediate structural variant between the known α and δ isomeric forms, with four octahedral and three tetrahedral molybdenum coordination spheres, along

Research paper thumbnail of Copper benzenedicarboxylate coordination polymers incorporating a long-spanning neutral co-ligand: Effect of anion inclusion and carboxylate pendant-arm length on topology and magnetism

Polyhedron, 2010

Three divalent copper coordination polymers containing aromatic dicarboxylate ligands and the lon... more Three divalent copper coordination polymers containing aromatic dicarboxylate ligands and the longspanning tethering imine bis(4-pyridylmethyl)piperazine (bpmp) have been prepared and structurally characterized. The length of the dicarboxylate pendant arms, carboxylate binding mode, and the inclusion of anionic components play a synergistic role in structure direction in this system. {[Cu(ip)(bpmp)(H 2 O)]Á5H 2 O} n (ip = isophthalate, 1) displays neutral (4,4) rectangular coordination polymer grids that stack in an ABCD repeat pattern. Use of the longer pendant arm dicarboxylate 1,3-phenylenediacetate (phda) resulted in {[Cu 2 (phda) 2 (bpmp)]ÁH 2 O} n (2), a 3-D network coordination polymer with primitive cubic topology that features strongly antiferromagnetically coupled (J = À331(1) cm À1 ) {Cu 2 (CO 2 ) 4 } paddlewheel units. In the presence of excess nitrate ions, {[Cu(phda)(Hbpmp)](NO 3 )Á3H 2 O} n (3) was isolated instead of 2; 3 manifests cationic 2-D coordination polymer layers built from weakly antiferromagnetically coupled (J = À2.43(1) cm À1 ) {Cu 2 O 2 } dimers linked through phda and protonated bpmp ligands. The striking difference in magnetic properties is ascribed to the equatorial-equatorial versus axial-equatorial bridging of copper coordination spheres in 2 and 3, respectively.

Research paper thumbnail of One- and two-dimensional cobalt benzenecarboxylate coordination polymers containing a kinked organodiimine: Synthesis, structure, and magnetic properties

Journal of Molecular Structure, 2008

Hydrothermal reaction of cobalt nitrate, phenylmalonic acid, and 4,4 0 -dipyridylamine (dpa) resu... more Hydrothermal reaction of cobalt nitrate, phenylmalonic acid, and 4,4 0 -dipyridylamine (dpa) resulted in formation of the coordination polymer [Co 2 (phac) 4 (dpa) 2 (H 2 O)] (1, phac = phenylacetate), where the phac ligand is formed in situ by the decarboxylation of phenylmalonic acid. Binuclear [Co 2 (phac) 4 (H 2 O)] units with both bridging and monodentate benzenecarboxylate ligands are linked into a twodimensional (4, 4) rhomboid grid network via dpa tethers within the structure of 1. Use of benzoate as the anionic component allowed the formation of [Co(benzoate) 2 (dpa) 2 ] (2), which manifested a dpa-linked one-dimensional chain coordination polymer motif with pendant monodentate and chelating carboxylates. Modest antiferromagnetic coupling was observed within the binuclear units in 1.

Research paper thumbnail of Control of dimensionality through nitrogen donor disposition in divalent metal perchlorate bis(pyridylmethyl)piperazine coordination polymers

Inorganica Chimica Acta, 2009

Slow diffusion of aqueous solutions of metal perchlorates with alcoholic solutions of bis(4-pyrid... more Slow diffusion of aqueous solutions of metal perchlorates with alcoholic solutions of bis(4-pyridylmethyl)piperazine (4-bpmp) or bis(3-pyridylmethyl)piperazine (3-bpmp) afforded crystalline coordination polymer phases whose dimensionality and topology is determined largely by the pyridyl nitrogen donor disposition within the imine components. {[M(H2O)4(4-bpmp)](ClO4)2·4-bpmp·4H2O}n (M=Co, 1-Co; M=Zn, 1-Zn) are isostructural, displaying cationic [M(H2O)4(4-bpmp)]n2n+ 1-D coordination polymer chains connected through extensive hydrogen-bonding pathways involving unligated

Research paper thumbnail of Effect of pendant arm length and nitrogen donor disposition on the topology of luminescent cadmium phenylenedicarboxylate coordination polymers with bis(pyridylmethyl)piperazine co-ligands

Inorganica Chimica Acta, 2010

Hydrothermal synthesis has afforded divalent cadmium coordination polymers containing bis(pyridyl... more Hydrothermal synthesis has afforded divalent cadmium coordination polymers containing bis(pyridylmethyl)piperazine (bpmp) tethers and either phenylenediacetate (phda) or phenylenedipropionate (phdp) ligands. {[Cd(1,4-phda)(4-bpmp)]Á1.5H 2 O} n (1) displays a (4,4)-grid layered structure based on 4-connected {Cd 2 O 2 } dimeric units. Extension of the pendant arms generated {[Cd(1,4-phdp)(H4bpmp)](ClO 4 )Á3.5H 2 O} n (2, phdp = phenylenedipropionate), which possesses a rare (3,6) 2D trigonal lattice based on 6-connected {Cd 2 O 2 } dimers. Changing the nitrogen donor atom disposition by using 3bpmp as the nitrogen co-ligand yielded [Cd(1,4-phdp)(3-bpmp)(H 2 O)] n (3), which crystallizes in a 3-fold interpenetrated achiral diamondoid lattice. [Cd(1,3-phda)(4-bpmp)] n (4) adopts a very similar structure to that of 1. Complexes 1-4 undergo blue-violet luminescence upon exposure to ultraviolet radiation.

Research paper thumbnail of One- and two-dimensional copper benzenedicarboxylate coordination polymers incorporating the flexible tethering diimine N,N′-bis(3-pyridylmethyl)piperazine: Synthesis, structure, and thermal properties

Inorganica Chimica Acta, 2008

A family of three copper benzenedicarboxylate coordination polymers has been constructed using th... more A family of three copper benzenedicarboxylate coordination polymers has been constructed using the conformationally flexible and hydrogen-bonding capable tethering ligand N,N 0 -bis(3-pyridylmethyl)piperazine (3-bpmp). These three coordination polymers have been characterized via single crystal X-ray diffraction, infrared spectroscopy and elemental and thermogravimetric analysis. {[Cu(ph)(Hph)(H3-bpmp)(H 2 O)] Á 3H 2 O} (1, ph = phthalate) manifests a 1-D chain motif held into a pseudo 3-D supramolecular structure through hydrogen bonding. While both {[Cu(ip)(3-bpmp)(H 2 O)] Á 2H 2 O} (2, ip = isophthalate) and [Cu(tp)(3-bpmp)] (3, tp = terephthalate) exhibit 2-D (4,4) rhomboid grid-like layers, they possess different layer stacking patterns and supramolecular interactions due to coordination geometry variances.

Research paper thumbnail of Cation control of dimensionality in isothiocyanate coordination polymers constructed from conformationally flexible 3,3′-bipyridine tethers

Inorganica Chimica Acta, 2007

Two isothiocyanate coordination polymers constructed from the conformationally flexible tethering... more Two isothiocyanate coordination polymers constructed from the conformationally flexible tethering ligand 3,3 0 -bipyridine (3,3 0 -bpy) and divalent metal cations have been prepared and characterized via single crystal X-ray diffraction, infrared spectroscopy and elemental analysis. [Co(NCS) 2 (3,3 0 -bpy) 2 ] (1), wherein the isothiocyanate ligands are coordinated in a trans fashion, manifests stacked two-dimensional (2-D) rhomboid grid layered motifs. In contrast, [Ni(NCS) 2 (3,3 0 -bpy) 2 ] (2) possesses a doubly interpenetrated adamantoid threedimensional (3-D) network despite the presence of trans isothiocyanate ligands. Thus, a metal cation-based control of coordination polymer dimensionality has been revealed in this system, reflective of different donor dispositions allowed by the conformational flexibility of the exobidentate 3,3 0 -bpy ligand. The 3-D framework of 2 decomposes at a temperature $40°C higher than the 2-D network of 1.

Research paper thumbnail of Divalent metal 1,3-phenylenediacetate coordination polymers with rigid or flexible dipyridyl tethers: Chains, layers, and interpenetrated networks

Inorganica Chimica Acta, 2010

... Karyn M. Blake a , Lindsey L. Johnston a , Maxwell A. Braverman a , Joseph H. Nettleman a , L... more ... Karyn M. Blake a , Lindsey L. Johnston a , Maxwell A. Braverman a , Joseph H. Nettleman a , Laura K. Sposato b and Robert L. LaDuca a , Corresponding Author Contact Information , E-mail The Corresponding Author , E-mail The Corresponding Author. ...

Research paper thumbnail of Cobalt phenylenediacetate coordination polymers containing long-spanning dipyridyl ligands: rectangular grid, primitive cubic, and 5-connected Archimedean layered net topologies

CrystEngComm, 2010

... Karyn M. Blake a, Lindsey L. Johnston a, Joseph H. Nettleman a, Ronald M. Supkowski b and Rob... more ... Karyn M. Blake a, Lindsey L. Johnston a, Joseph H. Nettleman a, Ronald M. Supkowski b and Robert L. LaDuca *a. a Lyman Briggs College and Department ... Adjacent [Co(1,4-phda)(4-bpmp)( H 2 O) 2 ] n (4,4) rhomboid layers stack along the a crystal direction in an AAA pattern ...

Research paper thumbnail of Light-Activated Serotonin for Exploring Its Action in Biological Systems

Chemistry & Biology, 2013