Chakraborty, Indranath and Mahata, Shrabani and Mitra, Anuradha and De, Goutam and Pradeep, Thalappil (2014) Controlled synthesis and characterization of the elusive thiolated Ag-55 cluster. Dalton Transactions, 43 (48). pp. 17904-17907. ISSN 1477-9226

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A stable, Ag-55 cluster protected with 4-(tert-butyl) benzyl mercaptan (BBSH) was synthesized which exhibits two prominent absorption bands with maxima at 2.25 and 2.81 eV. A molecular ion peak at m/z 11500 +/- 20 in matrix assisted laser desorption ionization mass spectrum (MALDI MS), assigned to Ag-55(BBS)(31) was observed. Electrospray ionization (ESI MS) shows a prominent trication along with higher charged species. An analogous Ag-55(PET) (31) (PET = 2-phenylethanethiol, in the thiolate form) was also synthesized under optimized conditions which proves the amenability of this cluster and the synthetic methodology to other ligands.

Item Type: Article
Subjects: Engineering Materials
Divisions: Nano-Structured Materials
Depositing User: Bidhan Chaudhuri
Date Deposited: 16 Feb 2015 10:57
Last Modified: 16 Feb 2015 10:57

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