Supramolecular 2D structure of Co(2-Me-Pyz)2(H2O)42 (original) (raw)
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Journal of Chemical Crystallography, 2011
The eight-membered {ÁÁÁHOC=O} 2 synthon featured in the crystal structure of 2-amino-4-nitrobenzoic acid (1) is replaced by carboxylic acidÁÁÁN-pyridine hydrogen bonds in its cocrystals with 2,2 0-bipyridine (2/1; 2) and bis(pyridin-2-yl)ketone (1/1; 3) indicating the robust nature of the latter synthon. Disruption of the three-dimensional architecture based on O-HÁÁÁO and N-HÁÁÁO(nitro) hydrogen bonds in (1) is evident in the cocrystals which form supramolecular tubes (2) and chains (3) based on O-HÁÁÁN and N-HÁÁÁO hydrogen bonding. Compound (1) crystallizes in the monoclinic space group P2 1 /n with a = 3.6291(1) Å , b = 7.7339(3) Å , c = 26.561(1) Å , b = 91.385(2)°, and Z = 4. Compound (2) crystallizes in the monoclinic space group C2/c with a = 27.562(3) Å , b = 6.8300(6) Å , c = 12.923(1) Å , b = 110.593(5)°, and Z = 4. Compound (3) crystallizes in the monoclinic space group P2 1 /c with a = 3.795(3) Å , b = 12.024(8) Å , c = 35.65(2) Å , b = 92.131(6)°, and Z = 4 (determined from synchrotron data).
Polyhedron, 2003
The reaction between transition metal salts, M(ClO 4) 2 ×/6H 2 O (M0/Co, Mn, Cu), sodium dicyanamide, NaN(CN) 2 , and 4,4?bipyridine-N,N?-dioxide, bpno, leads to three new complexes: [Co(bpno) 2 {N(CN) 2 } 2 (H 2 O) 2 ] 1, [Mn(bpno) 2 {N(CN) 2 } 2 (H 2 O) 2 ] 2, and [Cu(bpno){N(CN) 2 } 2 (H 2 O)] 3. In the three compounds, the N(CN) 2 (ions act as monodentate ligands through one of the CN groups. Compounds 1 and 2 are isomorphous. Both bpno molecules are terminal ligands. The metal ions, cobalt(II) and manganese(II), display an octahedral stereochemistry and are located on an inversion center. In compound 3, the bpno molecules act as bridging ligands and support the formation of infinite chains. The copper(II) ions are pentacoordinated. The packing diagrams of the three compounds reveal interesting supramolecular solid-state architectures. Compounds 1 and 2 are twodimensional hydrogen bonded polymers, which are formed by the interaction of the bpno and dicyanamido ligands with the aqua ligands of neighboring [M(bpno) 2 {N(CN) 2 } 2 (H 2 O) 2 ] units. The crystal structure of 3 consists of infinite chains of copper(II) ions connected through the bpno bridges. The distance between the copper atoms within the chain is 12.00 Å. The copper(II) ions exhibit a distorted square-pyramidal stereochemistry. The apical position is occupied by a water molecule. Hydrogen bond interactions between the aqua ligands and the terminal dicyanamido ligands lead to a complex 2-D structure.
Inorganica Chimica Acta, 2002
A series of complexes of the type trans -[Co(III)(bpb)(amine) 2 ]X (X 0/NCS, amine 0/pyrrolidine (prldn) (1), benzylamine (bzlan) (2), and X 0/ClO 4 , amine0/pyrrolidine (prldn) (3), benzylamine (bzlan) (4), piperidine (pprdn) (5), morpholine (mrpln) (6), and bpb 0/N ,N ?-bis(2-pyridinecarboxamide)-1,2-benzene dianion) have been synthesized and characterized by elemental analyses, IR, UV Á/Vis, and 1 H NMR spectroscopy. The crystal and molecular structure of 1 ×/0.5H 2 O was determined by X-ray crystallography. The compound crystallizes in the triclinic space group P/1; a 0/9.4059(8) Å , b 0/11.3047(10) Å , c 0/12.8451(11) Å , a 0/81.984(2)8, b 0/83.761(2)8, g 0/85.456(2)8, V 0/1341.6(2) Å 3 , Z0/2 and final R 1 0/0.039 (wR 2 0/0.0625) for 5723 independent reflections with I /2s (I ) and 368 parameters. The structure consists of chains of complexes linked by moderately strong N Ã/HÁ Á ÁOÄ/C hydrogenbonds zig-zagging along the c lattice translation. The IR, UV Á/Vis, and 1 H NMR spectra of the complexes are also discussed. #
Open Journal of Inorganic Chemistry, 2019
The ligand 1-(1-(pyridin-2-yl)ethylidene)carbonohydrazide (H 4 L 1) and 1-(pyridin-2-ylmethylene)carbonohydrazide (H 4 L 2) were prepared by reaction of carbonohydrazide with 2-acetylpyridine or pyridine carbaldehyde respectively in a reflux methanol solution. The complexes are prepared by reaction of the ligand with the appropriate metal salt. These complexes are well characterized by elemental analysis, IR and UV spectroscopies and their structure were determined by single X-ray diffraction technic. In the crystal of the dinuclear complex [Mn 2 (H 4 L 1) 2 (H 2 O) 4 ]•Cl 4 , 1) each Mn(II) center is seven coordinated by two nitrogen atom and one carbonyl atom of the one ligand and one nitrogen atom and one carbonyl oxygen atom of another ligand molecule. The coordination sphere is completed by two water molecules. Each of the carbonyl oxygen atom acts as bridge between the two Mn(II) centers. In the mononuclear complex [Co(H 4 L 2)(NO 3)(H 2 O) 2 ]•(NO 3); 2) the Co(II) center is heptacoordinated. The ligand acts in tridentate fashion through two nitrogen atoms and one carbonyl oxygen atom. Two water molecules lie in the apical positions. One nitrate group acts in bidentate manner while the other nitrate group remains uncoordinated. In both complexes the coordination polyhedral are best described as a pentagonal bipyramid. The molecules are linked together in each case by multiple hydrogen bond interaction resulting in a three-dimensional network. The crystallographic data has been deposited in Cambridge Crystallographic Data Centre [CCDC No. 1944387 (complex 1
Journal of Chemical Sciences, 2005
Reaction of pyridine-2,4,6-tricarboxylic acid (ptcH 3) with Co(NO 3) 2 .6H 2 O in presence of 4,4′bipyridine (4,4′-bpy) in water at room temperature results in the formation of {[Co 2 (ptcH) 2 (4,4′-bpy) (H 2 O) 4 ].2H 2 O}, (1). The solid-state structure reveals that the compound is a dimeric Co(II) complex assembled to a 3D architecture via an intricate intra-and inter-molecular hydrogen-bonding interactions involving water molecules and carboxylate oxygens of the ligand ptcH 2-. Crystal data: monoclinic, space group P2 1 /c, a = 11⋅441(5) Å, b = 20⋅212(2) Å, c = 7⋅020(5) Å, β = 103⋅77(5)°, V = 1576⋅7(1) Å 3 , Z = 2, R1 = 0⋅0363, wR2 = 0⋅0856, S = 1⋅000.
Crystal Engineering, 1999
The synthesis and crystal structures of [M(4,4Ј-bipyridine) 2 (NO 3) 2 ]⅐3naphthalene (M ϭ Co, 1⅐3naphthalene; Ni, 2⅐3naphthalene) are reported. 1⅐3naphthalene and 2⅐3naphthalene are isostructural and represent rare examples of interpenetrating planar networks that are chemically and topologically different. It appears that the networks coexist because the (4,4) topology of the cobalt and nickel square grids is complementary to the (6,3) topology of the naphthalene honeycomb network, resulting in an inclined interpenetrated 3D architecture. This observation is discussed in the context of rational design strategies for hybrid solids.