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

Project description:The two independent Ni(II) ions in the one-dimensional title complex, [Ni(2)(C(7)H(3)NO(4))(2)(C(12)H(8)N(4)S)(H(2)O)(2)](n) or [Ni(2)(pydc)(2)(bpt)(H(2)O)(2)](n) (H(2)pydc = pyridine-2,6-dicarboxylic acid and bpt = 2,5-di-4-pyrid-yl-1,3,4-thia-diazole), have different coordination environments. One Ni(II) ion is in a slightly-distorted octa-hedral coordination environment formed by three O atoms from two adjacent pydc ligands, two N atoms from bpt and pydc ligands, and one water mol-ecule, while the other Ni(II) ion is in distorted square-pyramidal geometry, coordinated by two O atoms from two carboxyl-ate groups and two N atoms from the pyridine rings of the pydc and bpt ligands in the basal plane, while a coordinated water mol-ecule occupies the apical site. In the crystal structure, the H atoms of both water mol-ecules are involved in inter-molecular hydrogen bonds with the O atoms of uncoordinated carboxyl-ate groups, which link chains into a three-dimensional network.

| S-EPMC2977561 | biostudies-literature

catena-Poly[[tris-(pyridine-?N)copper(II)]-?-tetra-fluoro-terephthalato-?O:O].

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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Project description:In the title compound, {[Cu(C(7)H(3)NO(4))(H(2)O)(3)]·H(2)O}(n), the Cu(II) ion is bonded to three water mol-ecules, one N,O-bidentate pyridine-2,3-dicarboxyl-ate dianion and one O-bonded symmetry-generated dianion, resulting in a distorted CuNO(5) octa-hedral geometry. The bridging ligand results in an infinite chain. A network of O-H?O hydrogen bonds helps to establish the crystal structure.

| S-EPMC2959291 | biostudies-literature

catena-Poly[[(3-methyl-pyridine)-copper(I)]-?-cyanido-copper(I)-?-cyanido].

Project description:In the title complex, [Cu(2)(CN)(2)(C(6)H(7)N)](n), there are two copper atoms with different coordination environments. One Cu atom (Cu1) is linked to the two cyanide ligands, one N atom from a pyridine ring while the other (Cu2) is coordinated by the two cyanide ligands in a slightly distorted tetra-hedral geometry and linked to Cu1, forming a triangular coordination environment. The Cu atoms are bridged by bidentate cyanide ligands, forming an infinite Cu-CN chain. One cyanide ligand is equally disordered over two sets of sites, exchanging C and N atoms coordinated to both metal atoms. However, one cyanide group is not disordered and it coordinates to Cu1 via the N atom whereas its C-atom counterpart coordinates Cu2. The 3-methyl-pyridine (3MP) ligand coordinates through the N atom to Cu1 as a terminal ligand, which originates from decyanation of 3-pyridyl-acetonitrile under hydro-thermal conditions. Adjacent Cu-CN chains are inter-connected through Cu?Cu inter-actions [2.8364?(10)?Å], forming a three-dimensional framework.

| S-EPMC3212195 | biostudies-literature

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Project description:The title compound, [Co(2)(C(9)H(4)N(2)O(4))(2)(H(2)O)(4)](n), is a one-dimensional polymeric complex with bridging 1H-benzimidazole-5,6-dicarboxyl-ate and aqua ligands. The Co(II) cation has an octa-hedral coordination environment provided by an NO(5) donor set. Adjacent polymeric chains extended along the [100] direction are linked by O-H?O and N-H?O hydrogen bonds, generating a three-dimensional network.

| S-EPMC2968675 | biostudies-literature

[(Pyridine-2,6-dicarboxyl-ato)copper(II)]-?-(pyridine-2,6-dicarboxyl-ato)-[bis-(ethyl-enediamine)-copper(II)]-?-(pyridine-2,6-dicarboxyl-ato)-[(pyridine-2,6-dicarboxyl-ato)copper(II)] ethyl-enediamine monosolvate tetra-hydrate.

Project description:The title compound, [Cu(3)(C(7)H(3)NO(4))(4)(C(2)H(8)N(2))(2)]·C(2)H(8)N(2)·4H(2)O, was obtained by the reaction of copper(II) acetate dihydrate with pyridine-2,6-dicarb-oxy-lic acid (H(2)dipic) and ethyl-enediamine (en) in an aqueous solution. All of the Cu(II) atoms in the trinuclear centrosymmetric title complex are six-coordinated in a distorted octa-hedral geometry with N(2)O(4) and N(4)O(2) environments for the outer and central Cu(II) atoms, respectively. Various inter-actions, including numerous O-H?O and C-H?O hydrogen bonds and C-O?? stacking of the pyridine and carboxyl-ate groups [O?centroid distances = 3.669?(2) and 3.668?(2)?Å] are observed in the crystal structure.

| S-EPMC3379149 | biostudies-other

catena-Poly[[[tetra-kis-(4-methyl-pyridine-κN)copper(II)]-μ-sulfato-κO:O'] 4.393-hydrate].

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

Crystal structure of a heterometallic coordination polymer: <i>catena</i>-poly[[[tetra-aqua-cobalt(II)]-μ-pyridine-2,6-di-carboxyl-ato-calcium(II)-μ-pyridine-2,6-di-carboxyl-ato] dihydrate].

Project description:In the crystal of the title polymeric complex, {[CoCa(C7H3NO4)2(H2O)4]·2H2O} n (1), the CoII ion is N,O,O'-chelated by two pyridine-2,6-di-carboxyl-ate anions in a distorted N2O4 octa-hedral geometry, and two carboxyl-ate O atoms of pyridine-2,6-di-carboxyl-ate anions bridge tetra-aqua-calcium(II) units to form polymeric chains propagating along the b-axis direction. In the crystal, O-H⋯O and C-H⋯O hydrogen bonds, and offset π-π stacking inter-actions [inter-centroid distances = 3.551 (1) and 3.746 (1) Å] involving inversion-related pyridine rings link the polymeric chains and lattice water mol-ecules to form a supra-molecular three-dimensional framework.

| S-EPMC6002818 | biostudies-literature

catena-Poly[[bis-(ethyl-enediamine)copper(II)]-?-sulfato].

Project description:In the title compound, [Cu(SO(4))(C(2)H(8)N(2))(2)](n), the Cu, S and two O atoms lie on a mirror plane. The Cu atom is in a distorted octa-hedral environment and the ethyl-enediamine ligand is in a gauche conformation. The sulfate dianion is bridging, forming a one-dimensional chain. A two-dimensional net parallel to (001) is generated by N-H?O hydrogen bonding between the chains.

| S-EPMC2979599 | biostudies-literature

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