Juan Costamagna - Profile on Academia.edu (original) (raw)
Papers by Juan Costamagna
Preface: Special issue: Azamacrocyclic ligands and their metal complexes
Journal of Coordination Chemistry, 2003
This special issue is devoted to an important area of coordination chemistry – azamacrocyclic lig... more This special issue is devoted to an important area of coordination chemistry – azamacrocyclic ligands and their metal complexes, with many applications in theoretical chemistry, biology, medicine, and industry. Despite the fact that such compounds have been covered in recent reviews, monographs and comprehensive issues on coordination and supramolecular chemistry, we believe that this issue, containing the latest experimental achievements in this field, will be useful for readers.
Bis(3,5-dibromo-N-o-tolylsalicylaldiminato)copper(II)
[Cu(C 14 H 10 Br 2 NO) 2 ] cristallise dans P2 1 /n avec a=17,866, b=21,963, c=14,128 A, β=93,16;... more [Cu(C 14 H 10 Br 2 NO) 2 ] cristallise dans P2 1 /n avec a=17,866, b=21,963, c=14,128 A, β=93,16; Z=8, affinement jusqu'a R=0,076. Les deux molecules independantes cristallographiquement ont des coordinations planes deformees presque identiques autour des atomes Cu. Les angles entre les deux plans de coordination definis par O1−Cu−N et O2−Cu−N2 sont 33,4 et 33,7 o pour respectivement les molecules 1 et 2. Les angles des liaisons principales N−Cu−N et N−Cu−O sont 155,0 et 92,5 o et les longueurs des liaisons principales Cu−N et Cu−O sont respectivement 1,963 et 1,885 A. Il n'y a pas d'interaction entre les atomes Cu
Steric and electronic factors affecting the conformation of bimetallic Cu(I) complexes. Effect of the aliphatic spacer of tetracoordinating Schiff base ligands
Chemistry (Weinheim an der Bergstrasse, Germany), Jan 22, 2018
A family of six homoleptic [CuI(Ln)]2(ClO4)2 and six heteroleptic [CuI(Ln)(PPh3)2]2(ClO4)2 bimeta... more A family of six homoleptic [CuI(Ln)]2(ClO4)2 and six heteroleptic [CuI(Ln)(PPh3)2]2(ClO4)2 bimetallic complexes, where Ln are bis-Schiff base ligands with alkyl spacers of variable length (n= 2-7 -CH2-), were prepared to evaluate the role of the spacer on the formation of helicates or mesocates. In the homoleptic series, spectroscopic and theoretical studies indicate that preferences for a conformation are based on energetic parameters, mainly, the establishment of non-covalent interactions. The odd-even nature of the spacers pre-conditions the superposition of the aromatic rings to allow the juxtaposition necessary for non-covalent interactions, while the increase of the length reduces the strength of such interactions. Consequently, complexes with even-spacers of short length were identified as helicates in solution, [CuI(Ln)]22+ (n=2,4). Complexes [CuI(Ln)]22+ (n=3-7) dissociate in solution to produce the monometallic complexes in equilibrium, [CuI(Ln)]+. The stability of the bim...
Theoretical and experimental study of the electronic structure and spectra of Ni(II) tetraazadinaphtho[14]annulene complexes
Http Dx Doi Org 10 1080 00958970310001624276, May 12, 2010
A Theoretical Investigation of the Structure and Electronic Spectra of Porphyrin Homolog Macrocycles. Hexaazacyclophane and its Nickel and Copper Complexes
Inorg Chem, 1995
Crystal and molecular structure of tris(tropolonato)manganese(III), Mn(O2C7H5)3, a high-spin complex having structural features consistent with Jahn-Teller behavior for two distinct MnO6 centers
Inorg Chem, 1974
Electroreduction of Molecular Oxygen on Poly-Iron- Tetraaminophthalocyanine Modified Electrodes
Electroanalysis, Aug 8, 2001
Ligand Influence on the Redox Properties of Some Copper(II) Complexes with Schiff Bases Derived from Bromosalicylaldehydes and Methyl or Chloro-substituted Anilines
Transition Metal Chemistry, 1986
A Supramolecular Cobalt-Porphyrin-modified Electrode, toward the Electroreduction of Co 2
J Coord Chem, 2004
Contribution of the ligand to the electroreduction of CO2 catalyzed by a cobalt(II) macrocyclic complex
Http Dx Doi Org 10 1080 00958970310001624447, May 12, 2010
Foreward
Journal of Coordination Chemistry, 2001
Characterization of tetra-, penta-, and hexacoordinated high-spin iron(II) complexes with neutral monodentate sulfur donor ligands. Crystal and molecular structure of Fe(DMTU)7(BF4)2(DMTU = N,N'-dimethylthiourea)
Inorg Chem, 1987
On the photo- and electro-induced polymerization of M(tetrakis( x-aminophenyl)porphyrin), where x = 2, 3 or 4 and M = Zn(II) or Ni(II)
Inorg Chim Acta, 2006
Spectroscopic and electroreductive characterization of new l-oxo- diiron(III) compounds with acyclic tetradentate ligands
Transit Metal Chem, 1997
Contaminación: Una carrera dedicada a la descontaminación del medio ambiente
Contribuciones De Dicyt, Jul 7, 2014
Kinectics of the Ground State Transformation in Fe(II) (N, N -Dicyclohexylthiourea)6(CIO4)2
Theoretical and experimental study of the electronic structure and spectra of Ni(II) tetraazadinaphtho[14]annulene complexes
Interpretación de espectros ultravioleta-visible de complejos de hierro (3) con ácidos hidroxámicos
Characterization of Tetracoordinated, Pentacoordinated, and Hexacoordinated High-Spin Iron (II) Complexes with Neutral Monodentate Sulfur Donor Ligands-Crystal and Molecular-Structure of Fe (N, N'-Dimethylthiourea) 7 (BF4) 2
Bis (N-isopropyl-5-bromosalicylaldiminato) nickel (ll)
Preface: Special issue: Azamacrocyclic ligands and their metal complexes
Journal of Coordination Chemistry, 2003
This special issue is devoted to an important area of coordination chemistry – azamacrocyclic lig... more This special issue is devoted to an important area of coordination chemistry – azamacrocyclic ligands and their metal complexes, with many applications in theoretical chemistry, biology, medicine, and industry. Despite the fact that such compounds have been covered in recent reviews, monographs and comprehensive issues on coordination and supramolecular chemistry, we believe that this issue, containing the latest experimental achievements in this field, will be useful for readers.
Bis(3,5-dibromo-N-o-tolylsalicylaldiminato)copper(II)
[Cu(C 14 H 10 Br 2 NO) 2 ] cristallise dans P2 1 /n avec a=17,866, b=21,963, c=14,128 A, β=93,16;... more [Cu(C 14 H 10 Br 2 NO) 2 ] cristallise dans P2 1 /n avec a=17,866, b=21,963, c=14,128 A, β=93,16; Z=8, affinement jusqu'a R=0,076. Les deux molecules independantes cristallographiquement ont des coordinations planes deformees presque identiques autour des atomes Cu. Les angles entre les deux plans de coordination definis par O1−Cu−N et O2−Cu−N2 sont 33,4 et 33,7 o pour respectivement les molecules 1 et 2. Les angles des liaisons principales N−Cu−N et N−Cu−O sont 155,0 et 92,5 o et les longueurs des liaisons principales Cu−N et Cu−O sont respectivement 1,963 et 1,885 A. Il n'y a pas d'interaction entre les atomes Cu
Steric and electronic factors affecting the conformation of bimetallic Cu(I) complexes. Effect of the aliphatic spacer of tetracoordinating Schiff base ligands
Chemistry (Weinheim an der Bergstrasse, Germany), Jan 22, 2018
A family of six homoleptic [CuI(Ln)]2(ClO4)2 and six heteroleptic [CuI(Ln)(PPh3)2]2(ClO4)2 bimeta... more A family of six homoleptic [CuI(Ln)]2(ClO4)2 and six heteroleptic [CuI(Ln)(PPh3)2]2(ClO4)2 bimetallic complexes, where Ln are bis-Schiff base ligands with alkyl spacers of variable length (n= 2-7 -CH2-), were prepared to evaluate the role of the spacer on the formation of helicates or mesocates. In the homoleptic series, spectroscopic and theoretical studies indicate that preferences for a conformation are based on energetic parameters, mainly, the establishment of non-covalent interactions. The odd-even nature of the spacers pre-conditions the superposition of the aromatic rings to allow the juxtaposition necessary for non-covalent interactions, while the increase of the length reduces the strength of such interactions. Consequently, complexes with even-spacers of short length were identified as helicates in solution, [CuI(Ln)]22+ (n=2,4). Complexes [CuI(Ln)]22+ (n=3-7) dissociate in solution to produce the monometallic complexes in equilibrium, [CuI(Ln)]+. The stability of the bim...
Theoretical and experimental study of the electronic structure and spectra of Ni(II) tetraazadinaphtho[14]annulene complexes
Http Dx Doi Org 10 1080 00958970310001624276, May 12, 2010
A Theoretical Investigation of the Structure and Electronic Spectra of Porphyrin Homolog Macrocycles. Hexaazacyclophane and its Nickel and Copper Complexes
Inorg Chem, 1995
Crystal and molecular structure of tris(tropolonato)manganese(III), Mn(O2C7H5)3, a high-spin complex having structural features consistent with Jahn-Teller behavior for two distinct MnO6 centers
Inorg Chem, 1974
Electroreduction of Molecular Oxygen on Poly-Iron- Tetraaminophthalocyanine Modified Electrodes
Electroanalysis, Aug 8, 2001
Ligand Influence on the Redox Properties of Some Copper(II) Complexes with Schiff Bases Derived from Bromosalicylaldehydes and Methyl or Chloro-substituted Anilines
Transition Metal Chemistry, 1986
A Supramolecular Cobalt-Porphyrin-modified Electrode, toward the Electroreduction of Co 2
J Coord Chem, 2004
Contribution of the ligand to the electroreduction of CO2 catalyzed by a cobalt(II) macrocyclic complex
Http Dx Doi Org 10 1080 00958970310001624447, May 12, 2010
Foreward
Journal of Coordination Chemistry, 2001
Characterization of tetra-, penta-, and hexacoordinated high-spin iron(II) complexes with neutral monodentate sulfur donor ligands. Crystal and molecular structure of Fe(DMTU)7(BF4)2(DMTU = N,N'-dimethylthiourea)
Inorg Chem, 1987
On the photo- and electro-induced polymerization of M(tetrakis( x-aminophenyl)porphyrin), where x = 2, 3 or 4 and M = Zn(II) or Ni(II)
Inorg Chim Acta, 2006
Spectroscopic and electroreductive characterization of new l-oxo- diiron(III) compounds with acyclic tetradentate ligands
Transit Metal Chem, 1997
Contaminación: Una carrera dedicada a la descontaminación del medio ambiente
Contribuciones De Dicyt, Jul 7, 2014
Kinectics of the Ground State Transformation in Fe(II) (N, N -Dicyclohexylthiourea)6(CIO4)2
Theoretical and experimental study of the electronic structure and spectra of Ni(II) tetraazadinaphtho[14]annulene complexes
Interpretación de espectros ultravioleta-visible de complejos de hierro (3) con ácidos hidroxámicos
Characterization of Tetracoordinated, Pentacoordinated, and Hexacoordinated High-Spin Iron (II) Complexes with Neutral Monodentate Sulfur Donor Ligands-Crystal and Molecular-Structure of Fe (N, N'-Dimethylthiourea) 7 (BF4) 2
Bis (N-isopropyl-5-bromosalicylaldiminato) nickel (ll)