Assembly of ZnII and CdII coordination polymers with different dimensionalities based on the semi-flexible 3-(1 H-benzimidazol-2-yl)propanoic acid ligand

Xiao-Yan Li; Yong-Qiong Peng; Juan Li; Wei-Wei Fu; Yang Liu; Yu-Ming Li

doi:10.1107/S2056989017017534

Assembly of Zn^II and Cd^II coordination polymers with different dimensionalities based on the semi-flexible 3-(1 H-benzimidazol-2-yl)propanoic acid ligand

Acta Crystallogr E Crystallogr Commun. 2018 Jan 1;74(Pt 1):28-33. doi: 10.1107/S2056989017017534.

Authors

Xiao-Yan Li¹, Yong-Qiong Peng¹, Juan Li¹, Wei-Wei Fu¹, Yang Liu¹, Yu-Ming Li¹

Affiliation

¹ Key Laboratory of Functional Organometallic Materials of General Colleges and Universities in Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, People's Republic of China.

Abstract

Two new coordination polymers, namely, poly[[μ₃-3-(1H-benzimidazol-2-yl)propionato]zinc(II)], [Zn(C₁₀H₈N₂O₂)] _n , (1), and poly[bis-[μ₂-3-(1H-benzimid-azol-2-yl)propionato]cadmium(II)], [Cd(C₁₀H₈N₂O₂)₂] _n , (2) have been synthesized from 3-(1H-benzoimidazol-2-yl)propanoic acid ligands through a mixed-ligand synthetic strategy under a solvothermal environment, and studied by single-crystal X-ray diffraction. Complex 1 crystallizes in the ortho-rhom-bic space group Pbca and features a two-dimensional structure formed by a binuclear Zn₂O₄ core. Complex 2, however, crystallizes in the monoclinic space group P2₁/c and forms a one-dimensional chain structure. The Zn^II and Cd^II ions have different coordination numbers and the 3-(1H-benzoimidazol-2-yl)propano-ate ligands display different coordination modes. The structures reported here show the importance of the selection of metal ions and suitable ligands.

Keywords: CdII; MOFs; ZnII; crystal structure; one-dimensional coordination polymers; two-dimensional coordination polymers.

Grants and funding

This work was funded by Scientific Research Fund of Hunan Provincial Education Department grant 16B037. Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education grant CHCL16002.