A binuclear zinc polymer with paddlewheel building units and intersecting helical chains based on a flexible 4-[(carboxymethyl)sulfanyl]benzoic acid ligand

作者：Zhang, Ming-Xing; Jiao, Xiao-Yan; Chen, Xin; Huang, Kun-Lin^*

来源：Acta Crystallographica Section C-Crystal Structure Communications, 2011, 67(10): M324-M326.

DOI：10.1107/S0108270111032811

• METAL-ORGANIC FRAMEWORKS
• HYDROGEN STORAGE
• COORDINATION
• COMPLEXES
• DINUCLEAR
• OXIDATION
• BLOCKS

The asymmetric unit of the title compound, poly[{mu(4)-4-[(carboxylatomethyl)sulfanyl]benzoato}(N,N-dimethylformamide)zinc], [Zn(C9H6O4S)(C3H7NO)](n), consists of one crystallographically independent Zn-II cation, one 4-[(carboxylatomethyl)sulfanyl]benzoate (L2-) ligand and one coordinated dimethylformamide (DMF) molecule. The zinc ion is coordinated by five O atoms from four separate L2- ligands and one DMF molecule, and the ZnO5 unit displays a distorted square-based-pyramidal geometry. Two ZnO5 units form a binuclear zinc-tetracarboxylate paddlewheel cluster, and these are bridged by L2- ligands to generate an intersecting helical chain (Zn2+ ions as nodes), which is composed of right-handed (P) and left-handed (M) helices. Weak C-H center dot center dot center dot O hydrogen bonds extend the one-dimensional coordinated chain into a weakly bound three-dimensional supramolecular architecture.

• 出版日期2011-10
• 单位河北北方学院; 重庆师范大学