Journal
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
Volume 64, Issue -, Pages M262-U2458Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S1600536807067141
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The title compound, [Co3Na2(C7H2ClNO4)(4)(H2O)(12)][Co(C7H2ClNO4)(H2O)(3)](2)center dot 6H(2)O, consists of a centrosymmetric dimer of [Co-II(dipicCl)(2)](2-) complex dianions [dipicCl is 4-chloropyridine- 2,6-dicarboxylate] bridged by an [Na2CoII(H2O)(12)](4+) tetracationic cluster, two independent [Co(dipicCl)(H2O)(3)] complexes, and six water molecules of crystallization. The metals are all six-coordinate with distorted octahedral geometries. The [Co-II(dipicCl)(H2O)(3)] complexes are neutral, with one tridentate ligand and three water molecules. The [Co-II(dipicCl)(2)](2-) complexes each have two tridentate ligands. The [Na2CoII(H2O)(12)](4+) cluster has a central Co-II ion which is coordinated to six water molecules and lies on a crystallographic inversion center. Four of the water molecules bridge to two sodium ions, each of which have three other water molecules coordinated along with an O atom from the [Co-II(dipicCl)(2)](2-) complex. In the crystal structure, the various units are linked by O-H center dot center dot center dot O hydrogen bonds, forming a three-dimensional network. Two water molecules are disordered equally over two positions.
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