title: [Ag21{S2P(OiPr)2}12]+: an eight-electron superatom.
abstract: A novel discrete [Ag21{S2P(OiPr)2}12](PF6) nanocluster has been synthesized and characterized by single-crystal X-ray diffraction and also NMR spectroscopy ((1)H, (31)P), ESI mass spectrometry, and other analytic techniques (XPS, EDS, UV/Vis spectroscopy). The Ag21 skeleton has an unprecedented silver-centered icosahedron that is capped by eight additional metal atoms. The whole framework is protected by twelve dithiophosphate ligands. According to the spherical Jellium model, the stability of monocationic nanocluster can be described by an 8-electron superatom with 1S(2) 1P(6) configuration, as confirmed by DFT calculations.
authors: Department of Chemistry, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien 97401 (Taiwan R.O.C.) http://faculty.ndhu.edu.tw/∼cwl/index.htm.
authors: Rajendra S
authors: RS
authors: Dhayal
authors: Jian-Hong
authors: JH
authors: Liao
authors: Yu-Chiao
authors: YC
authors: Liu
authors: Ming-His
authors: MH
authors: Chiang
authors: Samia
authors: S
authors: Kahlal
authors: Jean-Yves
authors: JY
authors: Saillard
authors: C W
authors: CW
authors: Liu
keywords: X-ray diffraction; icosahedral structures; nanoclusters; silver; superatoms