Format

Send to

Choose Destination
J Am Chem Soc. 2015 Jan 21;137(2):652-5. doi: 10.1021/ja512133a. Epub 2015 Jan 9.

Au19 nanocluster featuring a V-shaped alkynyl-gold motif.

Author information

1
State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, P. R. China.

Abstract

A novel Au19 nanocluster with a composition of [Au19(PhC≡C)9(Hdppa)3](SbF6)2 was synthesized (Hdppa = N,N-bis(diphenylphosphino)amine). Single crystal X-ray structural analysis reveals that the cluster comprises a centered icosahedral Au13 core hugged by three V-shaped PhC≡C-Au-C≡C(Ph)-Au-C≡CPh motifs. Such motif is observed for the first time in an alkynyl-protected gold nanocluster. The Au19 cluster shows two main optical-absorption bands at 1.25 and 2.25 eV, confirmed by time-dependent density functional theory. Orbital analysis indicates that PhC≡C- groups can actively participate in the frontier orbitals of the whole cluster. The new Au19 cluster and the novel alkynyl-gold motif open the door to understanding the alkynyl-gold interface and discovering many potential members of this new class of gold clusters.

PMID:
25545109
DOI:
10.1021/ja512133a
[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center