Self-assembly of a 3-D self-catenated framework based on [V₄O₁₂]⁴⁻ polyoxoanions and cobalt-organic polymer

Abstract

Reaction of a flexible ligand with cobalt salt in the presence of polyoxovanadate produces a new composite solid, Co₂(btx)₄V₄O₁₂, 1 (btx = 1,4-bis(triazol-1-ylmethyl)benzene). The structure of 1 was determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis, IR spectrum, and TG analysis. Compound 1 exhibits a 3-D 4,6-connected self-catenated net constructed from [V₄O₁₂]⁴⁻ building blocks and the {Co(btx)₂}²⁺ 3-D metal-organic cation polymer. The electronic properties of 1 have been investigated.

Keywords:

• Polyoxovanadates
• Entangled networks
• Organic–inorganic hybrid
• Electrochemical property

Acknowledgements

This study was financially supported by National Science Foundation of China (81072337), China Postdoctoral Science Foundation (20100481064 and 2012T50307) and S& Development Project Foundation of Jilin Province (201101057), General Administration of Quality Supervision, Inspection and Quarantine of China Project (2009IK151).