Syntheses,structures and luminescent properties of new lanthanide-based coordination polymers based on 1,4-benzenedicarboxylate(bdc)

摘要

Reaction of 1,4-benzenedicarboxylic acid(1,4-H2BDC)with EuCl3·6H2O in MeOH in the presence of Et3N and MeCN gives a mixture of the 3-D metal-organic-framework(MOF)materials[Eu2(1,4-BDC)3(MeOH)4]·8MeOH(1)and 2-D[Eu(1,4-BDC)(MeOH)4]Cl·MeOH·0.25H2O(2).Similar reactions afforded the isomorphous Gd(3)and Tb(4)analogs of 2.Reaction of 1,4-H2BDC with Ln(NO3)3·6H2O under similar conditions gave[Ln(BDC)NO3(MeOH)2]·MeCN·H2O(Ln=Eu(5)and Gd(6)),which have 2-D framework structures.The structures of 1-6 were determined by single crystal X-ray crystallographic studies and the luminescence properties of 1 and 4 in DMF solution were determined.