A chiral porous cobalt-organic framework based on reinforced sinusoidal-like SBUs involving in situ-generated formate

作者：Li Zongze; Du Lin; Zhou Jie; Li Lin; Hu Yan; Qiao Yongfeng; Xie Mingjin; Zhao Qihua^*

来源：New Journal of Chemistry, 2013, 37(8): 2473-2478.

DOI：10.1039/c3nj00236e

The assembly of Co(NO3)(2)center dot 6H(2)O and achiral isonicotinic acid (HIN) under solvo(hydro)thermal conditions yields a three-dimensional chiral Co-based MOF, {[Co-6(mu(3)-OH)(2)(IN)(4)(HCOO)(6)]center dot 4DMF center dot 5H(2)O}(n) (1). Polymer 1 consists of a reinforced sinusoidal-like hydroxyl-formate-carboxylate mixed-bridged chain as a rod-shaped secondary building unit (SBU), which is constructed from two types of asymmetric triangular Co-3 clusters. This compound also has open irregular channels in the framework and presents a severely distorted pcu net based on two different Co-3 clusters of SBUs as six connected nodes. The presence of a few drops of water in the DMF reaction solution is important in in situ HCOO- generation, which is beneficial for the formation of 1. Compound 1 is further characterized by IR, EA, PXRD, TGA-DSC, N-2 adsorption, and magnetic measurement.

• 出版日期2013
• 单位云南大学