title: Poly[(acetato-κO,O')aqua-(μ(4)-1H-benzimidazole-5,6-dicarboxyl-ato-κN:O,O:O,O:O)praseodymium(III)].
abstract: In the title complex, [Pr(C(9)H(4)N(2)O(4))(C(2)H(3)O(2))(H(2)O)](n), the Pr(III) ion is coordinated by five O atoms and one N atom from four benzimidazole-5,6-dicarboxyl-ate ligands, two O atoms from an acetate ligand and one water mol-ecule, giving a tricapped trigonal-prismatic geometry. The benzimidazole-5,6-dicarboxyl-ate and acetate ligands connect the Pr(III) ions, forming a layer in the ac plane; the layers are further linked by N-H⋯O and O-H⋯O hydrogen bonding and π-π stacking inter-actions between neighboring pyridine rings [the centroid-centroid distance is 3.467 (1) Å], assembling a three-dimensional supra-molecular network. The acetate methyl group is disordered over two positions with site-occupancy factors of 0.75 and 0.25.
authors.affiliation: School of Chemistry and Environment, South China Normal University, Guangzhou 510006, People's Republic of China.
authors.forename: Zi-Yu
authors.initials: ZY
authors.lastname: Pan
authors.forename: Jin-Hua
authors.initials: JH
authors.lastname: Chen
authors.forename: Jian-Fen
authors.initials: JF
authors.lastname: Lin
authors.forename: Xuan
authors.initials: X
authors.lastname: Xu
authors.forename: Yi-Fan
authors.initials: YF
authors.lastname: Luo