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Title: Synthesis and Structure Determination of a New Au 20 Nanocluster Protected by Tripodal Tetraphosphine Ligands

We report the synthesis and structure determination of a new Au 20 nanocluster coordinated by four tripodal tetraphosphine (PP 3) ligands {PP 3 = tris[2-(diphenylphosphino)ethyl]phosphine}. Single-crystal Xray crystallography and electrospray ionization mass spectrometry show that the cluster assembly can be formulated as [Au 20(PP 3) 4]Cl 4. The Au 20 cluster consists of an icosahedral Au 13 core and a seven-Au-atom partial outer shell arranged in a local C 3 symmetry. One PP 3 ligand coordinates to four Au atoms in the outer shell, while the other three PP 3 ligands coordinate to one Au atom from the outer shell and three Au atoms from the surface of the Au 13 core, giving rise to an overall chiral 16-electron Au cluster core with C3 symmetry.
Authors:
 [1] ;  [1] ;  [1] ;  [1]
  1. Brown Univ., Providence, RI (United States)
Publication Date:
OSTI Identifier:
1227054
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Inorganic Chemistry; Journal Volume: 53; Journal Issue: 8
Publisher:
American Chemical Society (ACS)
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Environmental Molecular Sciences Laboratory