Flexible and rigid dicarboxylic acids enable the assembly of achiral and chiral 3D Co(ii) metal-organic frameworks

Chunhua Gong; Haiyang Guo; Xianghua Zeng; Hao Xu; Qingdao Zeng; Junyong Zhang; Jingli Xie

doi:10.1039/c8dt00600h

Flexible and rigid dicarboxylic acids enable the assembly of achiral and chiral 3D Co(ii) metal-organic frameworks

Dalton Trans. 2018 May 28;47(20):6917-6923. doi: 10.1039/c8dt00600h. Epub 2018 Apr 9.

Authors

Chunhua Gong¹, Haiyang Guo², Xianghua Zeng², Hao Xu², Qingdao Zeng³, Junyong Zhang², Jingli Xie²

Affiliations

¹ College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P. R. China. jlxie@mail.zjxu.edu.cn and State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China.
² College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P. R. China. jlxie@mail.zjxu.edu.cn.
³ CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Beijing 100190, P. R. China. zengqd@nanoctr.cn.

PMID: 29629451
DOI: 10.1039/c8dt00600h

Abstract

Two novel 3D Co(ii) metal-organic frameworks induced by flexible and rigid dicarboxylic acids [Co₃(μ₃-OH)(1,4-ttb)₃(sa)]·3H₂O (1) and Co₂(μ₃-OH)(1,4-ttb)(4,4'-bpdc) (2) (1,4-ttb = 1-(tetrazo-5-yl)-4-(triazo-1-yl)benzene, sa = succinic acid and 4,4'-bpdc = biphenyl-4,4'-dicarboxylic acid) have been successfully synthesized and characterized via X-ray single-crystal diffraction, powder X-ray diffraction (PXRD), FT-IR spectroscopy and TG analyses. In the structures of the compounds 1 and 2, the main ligand 1,4-ttb coordinates with Co(ii) ions to form 3D host frameworks with different cavities, and the auxiliary ligands sa and 4,4'-bpdc fill the 3D cavities. More strikingly, compound 2 is a chiral 3D metal-organic framework, in which 4,4'-bpdc acts as a rigid achiral ligand. Additionally, the electrochemical properties and magnetic properties of compounds 1 and 2 have been investigated.