Exclusive synthesis of Au11(PPh3)8Br3 against the Cl analogue and the electronic interaction between cluster metal core and surface ligands.
To goldly go…: Exclusive Au11(PPh3)8Br3 (see illustration) formation was obtained by a novel two-phase method, although the molar ratio of Br(-)/Cl(-) was 1:4, as identified by ESI-MS. Interestingly, the interaction of Au11 core electrons with the benzene π electrons of the phosphine ligands was revealed by NMR spectroscopy and optical absorption spectroscopic analyses.
Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (P.R. China). zkwu@issp.ac.cn.
Zhikun
Z
Wu
Rongchao
R
Jin
conjugation; gold; nanoclusters; phosphane ligands; synthetic methods