Assembling Isomeric heterocyclic disulfide ligands with copper(I) iodide: effect of ligand structure on their assembly structures and S–S reactivity
作者:HAI-BIN ZHU、WEN-NA YANG、RU-YU SHAN
DOI:10.1080/00958972.2012.759653
日期:2013.2.1
Self-assembly of two isomeric heterocyclic disulfide ligands, n-ppds (n-ppds=di[n-(pyridin-2-yl)pyrimidinyl]disulfide, n=3, 4), with copper(I) iodide in acetonitrile/toluene produced different assembled structures and SS reactivity, exhibiting profound influence of disulfide structure. For 3-ppds, a 2D layered structure 1 based on [CuI(3-ppds)]2 was obtained. Homolytic cleavage of the SS bond occurred in 4-ppds, resulting in a 1D staircase double-chain structure 2. 1 and 2 have been characterized by single-crystal X-ray diffraction; solid-state diffuse-reflectance UVvis spectra show that 1 and 2 are semiconductors with band gaps of 2.88 and 2.16eV, respectively.