One-pot syntheses, structures and properties of two novel 1-D copper complexes: [Cu~(II)2(Hbpdc)2Cl2]2·2H2O and Cu~I(H2bpdc)Cl (H2bpdc = 2,2'-bipyridyl-5,5'-dicarboxylic acid)

摘要

Two novel 1-D copper complexes {[Cu~(II)2(Hbpdc)2]Cl2}2·2H2O and Cu~I(H2bpdc)Cl (H2bpdc = 2,2'-bipyridyl-5,5'-dicarboxylic acid) have been one-pot hydrothermally synthesized by reaction of H2bpdc, CuCl2·2H2O, PrCl3 and glacial acetic acid and structurally characterized by IR spectroscopy, X-ray photoelectron spectroscopy and single-crystal X-ray diffraction. Single-crystal structural analyses show that 1 is a novel 1 -D stair-like chain constructed from centric tetra-copper clusters {[Cu~(II)2(Hbpdc)2]Cl2}2 by means of Cu-O weak coordination interactions whereas 2 displays a 1-D comb-like chain built by [Cu~I(H2bpdc)Cl] units through Cl~- bridges. More interestingly, 1 and 2 were one-pot hydrothermally synthesized, which is very rare in synthetic chemistry. The photofluorescence properties of 1 and 2 have been investigated.