Abstract
A 3-D metal-organic framework [Cd3(L)2(DMF)2] · 2H2O · 2DMF (1) (H3L = 2-(dimethylcarbamoyl)biphenyl-5,2′,5′-tricarboxylic acid, DMF = N,N-dimethylformamide) with trinuclear Cd(II) units has been prepared. Complex 1 is a (3, 6)-connected (42 · 6)2(44 · 62 · 88 · 10) coordination net, which results from the solvothermal in situ formation of a new asymmetric ligand, 2-(dimethylcarbamoyl)biphenyl-5,2′,5′-tricarboxylic acid (H3L), through amidation of biphenyl-2,5,2′,5′-tetracarboxylic acid (H4bptc). Additionally, the luminescence of 1 has been investigated.
Acknowledgments
We gratefully acknowledge financial support by the NSF of China (Nos. 21071027 and 20771023), the China High-Tech Development 863 Program (No. 2007AA03Z218), and analysis and testing foundation of Northeast Normal University.