A new two-dimensional cadmium coordination polymer with 1H-imidazole-4-carboxylate and oxalate

作者：Yin Xia; Cai Song Liang; Zheng Sheng Run; Fan Jun; Zhang Wei Guang^*

来源：ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 2012, 68.

DOI：10.1107/S0108270112023153

The title compound, poly[aqua(mu 2-1H-imidazole-4-carboxylato-?3N3,O:O')hemi(mu 2-oxalato-?4O1,O2:O1',O2')cadmium(II)], [Cd(C4H3N2O2)(C2O4)0.5(H2O)]n, exhibits a two-dimensional network. The CdII cation is coordinated to one N atom and two carboxylate O atoms from two 1H-imidazole-4-carboxylate (Himc) ligands, two carboxylate O atoms from the bridging oxalate anion and one ligated water molecule; these six donor atoms form a distorted octahedral configuration. The oxalate anion lies on a centre of inversion. The Himc ligands connect the CdII cations to form CdHimcCdHimcCd zigzag chains, with a Cd...Cd separation of 5.8206 (6) angstrom along the b direction, which are further linked by tetradentate oxalate anions to generate a two-dimensional herringbone architecture in the ab plane. These layers are extended to form a three-dimensional supramolecular framework via OH...O and NH...O hydrogen bonds and pp stacking interactions. The solid-state photoluminscent behaviour of the title compound has been investigated at room temperature.

• 单位
  华南师范大学