title: Poly[[[μ(2)-1,1'-(butane-1,4-di-yl)bis-(1H-imidazole)-κN:N](μ(2)-2,6-di-methyl-pyridine-3,5-dicarboxyl-ato-κO:O)zinc] dihydrate].
abstract: In the title coordination polymer, {[Zn(C(9)H(7)NO(4))(C(10)H(14)N(4))]·2H(2)O}(n), the Zn(II) ion displays a distorted tetra-hedral geometry with two imidazole N atoms from two 1,1'-(butane-1,4-di-yl)bis-(imidazole) (bbi) ligands and two carboxyl-ate O atoms from two 2,6-dimethyl-pyridine-3,5-dicarboxyl-ate (dpdc) ligands. The bbi and dpdc ligands bridge the Zn(II) ions, forming layers parallel to (011). O-H⋯O and O-H⋯N hydrogen bonds and π-π inter-actions between the imidazole rings [centroid-centroid distance = 3.807 (5) Å] connect the layers. Two of the three uncoordinated water mol-ecules are disordered, each over two 0.25-occupancy positions.
authors: Yu-Mei
authors: YM
authors: Yue
authors: Lei
authors: L
authors: Qian
authors: Zheng-Hao
authors: ZH
authors: Zhu
authors: Cheng
authors: C
authors: Wang
authors: Ting
authors: T
authors: Gao