Synthesis, crystal structures, luminescent and thermal properties of two new metal–organic coordination polymers based on zinc(ii) carboxylates

Abstract

Two new metal–organic coordination polymers, [NH2(CH3)2]2[Zn3(bdc)4]·DMF·H2O (1) (H2bdc = 1,4-benzenedicarboxylic acid) and [NH2(CH3)2]2[Zn3(bpdc)4]·5DMF (2) (H2bpdc = 4,4′-biphenyldicarboxylic acid), were synthesized by heating a DMF solution of Zn(NO3)2·6H2O, [NH2(CH3)2]Cl and organic carboxylic acids. Single-crystal X-ray structure analysis reveals that these compounds have 3D anionic framework structures built from zinc(II) carboxylate layers linked by carboxylate anions. Compounds 1 and 2 were characterized by IR, TGA and XRPD, and their luminescent properties were also investigated.