2 research outputs found
Tetra-μ-aqua-octaaquaÂbis(μ-4-chloroÂpyridine-2,6-dicarboxylÂato)bisÂ(4-chloroÂpyridine-2,6-dicarboxylÂato)triÂcobalt(II)disodium(I) bisÂ[triaquaÂbis(4-chloroÂpyridine-2,6-dicarboxylÂato)cobalt(II)] hexaÂhydrate
The title compound, [Co3Na2(C7H2ClNO4)4(H2O)12][Co(C7H2ClNO4)(H2O)3]2·6H2O, consists of a centrosymmetric dimer of [CoII(dipicCl)2]2− complex dianions [dipicCl is 4-chloroÂpyridine-2,6-dicarboxylÂate] bridged by an [Na2CoII(H2O)12]4+ tetraÂcationic cluster, two independent [Co(dipicCl)(H2O)3] complexes, and six water molÂecules of crystallization. The metals are all six-coordinate with distorted octahedral geometries. The [CoII(dipicCl)(H2O)3] complexes are neutral, with one tridentate ligand and three water molecules. The [CoII(dipicCl)2]2− complexes each have two tridentate ligands. The [Na2CoII(H2O)12]4+ cluster has a central CoII 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 [CoII(dipicCl)2]2− complex. In the crystal structure, the various units are linked by O—H⋯O hydrogen bonds, forming a three-dimensional network. Two water molecules are disordered equally over two positions