Water molecule-enhanced CO2 insertion in lanthanide coordination polymers

Two new lanthanide coordination polymers H2N(CH3)2·[EuIII2(L1)3(L2)] (1, L1=isophthalic acid dianion, L2=formic acid anion) and [LaIII(2,5-PDC)(L2)](2, 2,5-PDC=2,5-pyridinedicarboxylate dianion) were synthesized under solvothermal conditions. It is of interest that the formic ligand (L2) is not contained in the stating materials, but arises from the water molecule-enhanced CO2 insertion during the solvothermal process. Both of the two compounds exhibit complicated three dimensional sandwich-like frameworks.

Graphical abstractTwo new lanthanide coordination polymers involving water molecule-enhanced CO2 insertion resulting in the formation of formic anion and dimethylammonium cation were synthesized under solvothermal conditions.Figure optionsDownload full-size imageDownload as PowerPoint slide