4 research outputs found
A facile preparation of two new isostructural metal-organochalcogen clusters from simple starting materials: Sonochemical synthesis, X-ray structures and spectroscopic remarks
No full textIn this work, the formation and characterisation of two new isostructural metal-organochalcogen clusters from simple starting materials was investigated. A sonochemical synthesis was performed in a one-pot procedure without the isolation of synthetic intermediates. This methodology offers a new approach to prepare cluster compounds, and this experiment led to the formation of [(PhTe)(12)Hg-8(S)X-2 (Py)(2)]center dot Py (X = Br, I; Py = Pyridine) in good yield. the X-ray analyses reveal that the framework of the clusters contains a similar [Hg-8(mu(4)-S)Te-12] core as the central unit. the sulphur atom present in the core of both structures has a tetrahedral coordination geometry achieved by four S-Hg(II) bonds. the complete characterisation of the synthesised materials also includes elemental analyses, IR spectroscopy and UV-Vis absorption data. (C) 2012 Elsevier B. V. All rights reserved.Fundacao Univ Fed Grande Dourados, Lab Sintese & Caracterizacao Mol, BR-79804970 Dourados, MS, BrazilUniversidade Federal de São Paulo, Dept Quim, BR-09972270 Diadema, SP, BrazilUniv Fed Santa Maria, Dept Quim, BR-97105900 Santa Maria, RS, BrazilUniv Fed Mato Grosso do Sul, Grp Opt & Foton, BR-79070900 Campo Grande, MS, BrazilUniversidade Federal de São Paulo, Dept Quim, BR-09972270 Diadema, SP, BrazilWeb of ScienceConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)FINEP (Finaciadora de Estudos e Projetos)FUNDECT (Fundacao de Apoio ao Desenvolvimento do Ensino, Ciencia e Tecnologia do Estado do Mato Grosso do Sul)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)UFG
