Aqua-(1,10-phenanthroline)(pyridine-2,6-dicarboxyl-ato)nickel(II) pyridine-2,6-di-carboxylic acid solvate tetra-hydrate.

ABSTRACT: The title compound, [Ni(C(7)H(3)NO(4))(C(12)H(8)N(2))(H(2)O)]·C(7)H(5)NO(4)·4H(2)O or [Ni(pydc)(phen)(H(2)O)].pydcH(2)·4H(2)O, was obtained by the reaction of nickel(II) nitrate hexa-hydrate with the proton-transfer compound (phenH)(2)(pydc) (phen is 1,10-phenanothroline and pydcH(2) is pyridine-2,6-dicarboxylic acid) in aqueous solution. Both the cationic and anionic portions of the starting proton-transfer compound are involved in the complexation. The Ni(II) atom has a distorted octa-hedral geometry and is hexa-coordinated by three O atoms and three N atoms from one phen fragment (as a bidentate ligand), one (pydc)(2-) unit (as a tridentate ligand) and one water mol-ecule. In the crystal structure, extensive O-H?O, O-H?N and C-H?O hydrogen bonds with D?A distances ranging from 2.573?(2) to 3.385?(2)?Å, ?-? inter-actions between the phen ring systems [with centroid-centroid distances of 3.4694?(12), 3.4781?(11) and 3.8310?(11)?Å] and inter-molecular C-O?? inter-actions [C?? distances of 3.4812?(17), 3.5784?(16) and 3.5926?(16)?Å] connect the various components together.

SUBMITTER: Safaei-Ghomi J 

PROVIDER: S-EPMC2967847 | biostudies-other | 2008

REPOSITORIES: biostudies-other