Guanidinium (aqua-2?O)(4-hydr-oxy-6-carboxy-pyridine-2-carboxyl-ato-2?O,N,O)(?-4-hydroxy-pyridine-2,6-dicarboxyl-ato-1:2?O,N,O:O)(4-hydroxy-pyridine-2,6-dicarboxyl-ato-1?O,N,O)dizincate(II) dihydrate.

ABSTRACT: The title compound, (CH(6)N(3))[Zn(2)(C(7)H(3)NO(5))(2)(C(7)H(4)NO(5))(H(2)O)]·2H(2)O, has an anionic binuclear complex of Zn(II) balanced with a guanidinium cation. There are two uncoord-inated water mol-ecules in the structure. The asymmetric unit of the compound has two different coordination types (the coordination of Zn1 is distorted trigonal-bipyramidal, while that of Zn2 is distorted octahedral) of Zn(II) in the crystal structure that are bridged to each other via one hypydc(2-) group (hypydcH(2) is 4-hydroxy-pyridine-2,6-dicarboxylic acid). A variety of inter-molecular O-H?O, N-H?O and C-H?O hydrogen bonds involving water mol-ecules, cations and anions, and also a weak ?-? inter-action [3.798?(1)?Å], are responsible for extending the structure into a three-dimensional network.

SUBMITTER: Aghabozorg H 

PROVIDER: S-EPMC2960790 | biostudies-literature | 2008 Feb

REPOSITORIES: biostudies-literature