Synthesis and structure of two-dimensional coordination polymer based on 2,2′-bithiophene-5,5′-dicarboxylic acid

A new metal-organic framework (MOF) [Co 3 (btdc) 3 (5,5′-dmbpy) 2 ] • 5DMF ( 1 ) (H 2 btdc is 2,2′-bithiophene-5,5′-dicarboxylic acid and 5,5′-dmbpy is 5,5′-dimethyl-2,2′-bipyridyl) was synthesized. Compound 1 contains trinuclear secondary building blocks connected to each other by the btdc 2− ligand to form a layered coordination polymer with a free accessible volume of 36%.