Premium
A Chiral Gold Nanocluster Au 20 Protected by Tetradentate Phosphine Ligands
Author(s) -
Wan XianKai,
Yuan ShangFu,
Lin ZhiWei,
Wang QuanMing
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201308599
Subject(s) - phosphine , chirality (physics) , denticity , crystallography , icosahedral symmetry , nanoclusters , dichloromethane , cluster (spacecraft) , gold cluster , chelation , chemistry , crystal structure , materials science , stereochemistry , nanotechnology , inorganic chemistry , computational chemistry , organic chemistry , electronic structure , physics , catalysis , symmetry breaking , chiral symmetry breaking , quantum mechanics , solvent , computer science , nambu–jona lasinio model , programming language
The chirality of a gold nanocluster can be generated from either an intrinsically chiral inorganic core or an achiral inorganic core in a chiral environment. The first structural determination of a gold nanocluster containing an intrinsic chiral inorganic core is reported. The chiral gold nanocluster [Au 20 (PP 3 ) 4 ]Cl 4 (PP 3 =tris(2‐(diphenylphosphino)ethyl)phosphine) has been prepared by the reduction of a gold(I)–tetraphosphine precursor in dichloromethane solution. Single‐crystal structural determination reveals that the cluster molecular structure has C 3 symmetry. It consists of a Au 20 core consolidated by four peripheral tetraphosphines. The Au 20 core can be viewed as the combination of an icosahedral Au 13 and a helical Y‐shaped Au 7 motif. The identity of this Au 20 cluster is confirmed by ESI‐MS. The chelation of multidentate phosphines enhances the stability of this Au 20 cluster.