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Poly[[diaqua[μ(5)-(R,S)-2-({2-[(1,2-di-carboxyl-atoeth-yl)amino]-eth-yl}amino)-butane-dioato]cobaltate(III)sodium] di-hydrate].

ABSTRACT: In the asymmetric unit of the title coordination polymer, {[CoNa(C(10)H(12)N(2)O(8))(H(2)O)(2)]·2H(2)O}(n), the Co(II) ion is coord-inated in a distorted octa-hedral environment, defined by two N atoms and four carboxyl-ate O atoms. Two Co(II) ions and two 2-({2-[(1,2-dicarboxyl-atoeth-yl)amino]-eth-yl}amino)-butane-dio-ate (EDDS) ligands form a dimeric complex dianion [Co(2)(EDDS)(2)]. These dimeric units are connected via Na(+) ions, forming a three-dimensional polymeric structure. In the crystal, the ligand N-H groups and the coordinated and solvent water mol-ecules are involved in inter-molecular N-H⋯O and O-H⋯O hydrogen bonding, reinforcing the three-dimensional polymeric structure.

SUBMITTER: Trunova OK

PROVIDER: S-EPMC3246970 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Poly[[[diaqua-cobalt(II)]-bis-[μ-1,1'-(butane-1,4-di-yl)diimidazole-κN:N]] dichloride tetra-hydrate].

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Project description:In the title compound, {[Cu(C(10)H(14)N(4))(2)(H(2)O)(2)](NO(3))(2)}(n), the Cu(II) ion lies on an inversion center and is six-coordinated in an octa-hedral environment by four N atoms from four different 1,1'-butane-1,4-diyldiimidazole ligands and two O atoms from the two water mol-ecules. Bridging by the ligands results in a ribbon structure. Adjacent ribbons are linked to the nitrate anions via O-H?O hydrogen bonds, forming layers. One nitrate O atom is disordered equally over two positions.

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Project description:The title compound, (C(13)H(10)N)(2)[Co(C(6)H(2)N(2)O(4))(2)(H(2)O)(2)]·6H(2)O, consists of mononuclear trans-[Co(pz-2,3-dc)(2)(H(2)O)(2)](2-) complex anions, (acrH)(+) cations and uncoordinated water mol-ecules (acr is acridine and pz-2,3-dcH(2) is pyrazine-2,3-dicarboxylic acid). The Co(II) atom, which lies on a crystallographic center of symmetry, has a slightly distorted octa-hedral coordination environment, with two N and two O atoms from the (pz-2,3-dc)(2-) ligands in the equatorial plane and with two water mol-ecules in axial positions. In the crystal, the components are held together by two distinct N-H?O and C-H?O hydrogen bonds with R(2) (2)(8) graph-sets. The coordinated and uncoordinated water mol-ecules are also involved in O-H?O hydrogen bonds, which lead to the formation of layers with R(3) (3)(12) graph-set motifs. Extensive ?-? stacking inter-actions between parallel aromatic rings of the acridinium ions, with distances ranging from 3.533?(1) to 3.613?(1)?Å, occur in the structure.

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