Poly[[hexa-aqua-(μ(2)-oxalato-κO,O:O,O)bis(μ(3)-pyridine-2,4-dicarboxyl-ato-κN,O:O:O)dicerium(III)] monohydrate].

ABSTRACT: In the polymeric title compound, {[Ce(2)(C(7)H(3)NO(4))(2)(C(2)O(4))(H(2)O)(6)]·H(2)O}(n), the Ce(3+) cation is nine-coordinated in a distorted CeNO(8) tricapped trigonal-prismatic geometry, formed by three pyridine-2,4-dicarboxyl-ate anions, one oxalate anion and three water mol-ecules. The mid-point of the oxalate anion is located on an inversion center. The oxalate and pyridine-2,4-dicarboxyl-ate anions bridge the Ce(3+) cations, forming a two-dimensional polymeric complex parallel to (010). Inter-molecular classical O-H⋯O hydrogen bonding and weak C-H⋯O hydrogen bonding are present in the crystal structure and π-π stacking [centroid-centroid distance = 3.558 (2) Å] is observed between parallel pyridine rings of adjacent mol-ecules. The uncoordinated water mol-ecule shows an occupancy o

SUBMITTER: Shen FM 

PROVIDER: S-EPMC3254299 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature