Structure and photocatalytic performance of a metallacycle complex based on flexible carboxylic acid ligand

Abstract A new compound of {[Cu2(L)2(2,2′-bipy)2(H2O)2]·2H2O}n (1) (H2L = 1,3-bis(4′-carboxylatophenoxy)benzene, 2,2′-bipy = 2,2′-bipyridine), was prepared and full characterized. 1 shows a metallacycle unit, which was further extended into 3D supramolecular motif through the π-π packing and H-bonded interactions. 1 obtained effectively photocatalytic performance to the disintegration of Rhodamine B (Rh B) compared to the dyes of basic green (BG), methyl violet (MV) and methylene blue (MB). In addition, the plausible mechanism displayed by 1 for the catalytic degradation toward Rh B was proposed using the trapping method and LC-MS studies.