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Catena-Poly[[(pyridine-?N)copper(II)]-?(3)-pyridine-2,6-dicarboxylato-?O:O,N,O:O].

ABSTRACT: In the title compound, [Cu(C(7)H(3)NO(4))(C(5)H(5)N)](n), the Cu(II) atom is in a slightly distorted octa-hedral coordination environment. Each Cu(II) atom is bound to two N atoms and one O atom of the pyridine-dicarboxyl-ate (PDA) ligand in a tridentate manner, one N atom of the pyridine mol-ecule and two bridging carboxyl-ate O atoms of adjacent PDA ligands, leading to a linear one-dimensional chain running along the c axis. These chains are further assembled via weak C-H?O and ?-? inter-actions into a three-dimensional supra-molecular network structure. The centroid-centroid distance between the ?-? inter-acting pyridine rings is 3.9104?(13)?Å. The two N atoms are trans to each other with respect to Cu.

SUBMITTER: Trivedi M

PROVIDER: S-EPMC2968654 | biostudies-literature | 2009 Feb

REPOSITORIES: biostudies-literature

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catena-Poly[[(pyridine-κN)copper(II)]-μ(3)-pyridine-2,6-dicarboxylato-κO:O,N,O:O].

Trivedi Manoj M Pandey Daya Shankar DS Rath Nigam P NP

Acta crystallographica. Section E, Structure reports online 20090221 Pt 3

In the title compound, [Cu(C(7)H(3)NO(4))(C(5)H(5)N)](n), the Cu(II) atom is in a slightly distorted octa-hedral coordination environment. Each Cu(II) atom is bound to two N atoms and one O atom of the pyridine-dicarboxyl-ate (PDA) ligand in a tridentate manner, one N atom of the pyridine mol-ecule and two bridging carboxyl-ate O atoms of adjacent PDA ligands, leading to a linear one-dimensional chain running along the c axis. These chains are further assembled via weak C-H⋯O and π-π inter-actio ...[more]

PMID: 21582082

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catena-Poly[[aquanickel(II)]-?-pyridine-2,6-dicarboxylato-[aquanickel(II)]-?-2,5-di-4-pyridyl-1,3,4-thiadiazole].

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| S-EPMC2977561 | biostudies-literature

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Project description:In the title compound, [Cu(C(8)F(4)O(4))(C(5)H(5)N)(3)](n), the Cu(II) atom, lying on a twofold rotation axis, is five-coordinated by two O atoms from two tetra-fluoro-terephthalate ligands and three N atoms from three pyridine ligands in a distorted trigonal-bipyramidal geometry. Adjacent Cu(II) atoms are connected via the bridging tetra-fluoro-terephthalate ligands into a one-dimensional chain running along the [101] direction.

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| S-EPMC3379149 | biostudies-other

catena-Poly[[aqua-bis-(pyridine-?N)copper(II)]-?-2,2'-(p-phenyl-enedi-oxy)diacetato-?O:O'].

Project description:In the title compound, [Cu(C(10)H(8)O(6))(C(5)H(5)N)(2)(H(2)O)](n), the Cu atom is five-coordinated by two O atoms from two carboxyl-ate groups of two different 2,2'-(p-phenyl-enedi-oxy)diacetate ligands, two N atoms from two pyridine mol-ecules and one water O atom. The geometry is square-pyramidal with the water O atom occupying the apical position. The carboxyl-ate group bridges adjacent Cu atoms, forming an infinite zigzag chain extending parallel to [001]. The chains are linked into layers by O-H?O hydrogen bonds. The Cu and water O atoms lie on special positions of site symmetry 2.

| S-EPMC2983391 | biostudies-literature

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Project description:The structure of the title compound, {[Cu(SO(4))(C(6)H(7)N)(4)]·4.393H(2)O}(n), consists of Cu(2+) ions surrounded in a square-planar fashion by 4-methyl-pyridine ligands, forming two crystallographically independent Cu{H(3)C(C(5)H(4)N)}(4) units that are both located on crystallographic inversion centers. The Cu(4-methyl-pyridine)(4) units are, in turn, connected with each other via bridging sulfate anions, leading to the formation of infinite [Cu{H(3)C(C(5)H(4)N)}(4)SO(4)](n) zigzag chains along [001]. The completed coordination spheres of the Cu(2+) ions are slightly distorted octa-hedral. The axial Cu-O bonds are elongated [average length = 2.42 (4) Å] compared to the equatorial Cu-N bonds [average length = 2.043 (2) Å]. The inter-stitial space between the chains is filled with uncoordinated water mol-ecules that consolidate the structure through O-H⋯O hydrogen bonding. One of the five crystallographically independent solvent water mol-ecules is partially occupied with an occupancy factor of 0.396 (4). Due to hydrogen bonding between symmetry-equivalent water mol-ecules across inversion centers, several of the water H atoms are disordered in 1:1 ratios over mutually exclusive positions. The crystal under investigation was found to be non-merohedrally twinned in a 0.789 (1):0.211 (1) ratio by a 180° rotation around the reciprocal b axis.

| S-EPMC3051987 | biostudies-literature

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