Poly[piperazinediium [[aqua-bismuth-ate(III)]-di-?-pyridine-2,6-dicarboxyl-ato-bis-muthate(III)-di-?-pyridine-2,6-dicarboxyl-ato] monohydrate].

ABSTRACT: The title compound, {(C(4)H(12)N(2))[Bi(2)(C(7)H(3)NO(4))(4)(H(2)O)]·H(2)O}(n) or {(pipzH(2))[Bi(2)(pydc)(4)(H(2)O)]·H(2)O}(n), where pydcH(2) is pyridine-2,6-dicarboxylic acid and pipz is piperazine, was obtained by reaction of Bi(NO(3))(3)·5H(2)O with (pipzH(2))(pydc-H)(2)·3H(2)O in a 1:2 molar ratio in aqueous solution. There are two independent Bi(III) atoms in the structure, one of which is eight-coordinate with a distorted bicapped trigonal-prismatic geometry, and another which is nine-coordinate with a distorted tricapped trigonal-prismatic geometry. The carboxyl-ate groups of the (pydc)(2-) ligands link dinuclear [Bi(2)(C(7)H(3)NO(4))(4)(H(2)O)](2-) units into one-dimensional coordin-ation polymers. The pipzH(2) (2+) cations (site symmetry ) and non-coordinated water mol-ecules lie between these polymers, forming N-H?O and O-H?O hydrogen bonds to the O atoms of the carboxylate groups.

SUBMITTER: Aghabozorg H 

PROVIDER: S-EPMC2960170 | biostudies-literature | 2008 Jan

REPOSITORIES: biostudies-literature