figshare
Browse

Silver Clusters Coprotected by Different Diphosphine and Thiol Ligands

Download (941.02 kB)
journal contribution
posted on 2022-08-10, 23:40 authored by Yu-Han Xia, Jun-Jie Fang, Xin-Yan Xia, Zheng Liu, Yun-Peng Xie, Xing Lu
The diphosphine ligands can act as auxiliary ligands for the thiol ligands to generate novel silver clusters. Here, we report five silver thiolated clusters protected by diphosphine ligands, namely, [Ag11(iPrS)9(dppm)3]­(BPh4)2 (1, dppm = bis­(diphenylphosphino)­methane), S@Ag26(iPrS)16(CF3COO)8(dpph)2·3DMF (2, dpph = 1,6-bis­(diphenylphosphino)­hexane), S@Ag26(iPrS)16(CF3COO)8(dpppe)2·2DMF (3, dpppe = 1,5-bis­(diphenylphosphino)­pentane), AgS2@Ag24(tBuS)18(dpppe)2(BF4)3 (4), and [SO4@Ag20(iPrS)10(CF3COO)8(dpphS2)2]n (5, dpphS2 = 1,6-bis­(diphenylphosphino)­hexane disulfide). Their structures were characterized by single-crystal X-ray diffraction, which revealed that 1 presents a triangular structure covered by three diphosphine ligands, and there are strong C–H···π interactions between clusters and between clusters and counterions. Clusters 2 and 3 are olive-shaped structures, and cluster 4 is a box-type structure. Clusters 24 all have two diphosphine ligands at both ends. Cluster 5 is a chainlike structure connected by dpphS2. Among them, cluster 1 exhibits photoluminescence (PL) properties, and the emission of its solution phase is red-shifted compared to the crystalline state.

History