Hexanuclear Silver(I) Hexamethylene Dithiocarbamate Cluster [Ag6{S2CN(CH2)6}6]·2CH2Cl2: Preparation, Molecular Structure (Manifestation of Argentophilic Interaction), and Thermal Behavior

Resumo

A new silver(I) cyclohexamethylene dithiocarbamate has been isolated in the form of a hexanuclear solvated cluster [Ag₆{S₂CN(CH₂)₆}₆]·2CH₂Cl₂. Structure of the obtained compound has been elucidated by IR spectroscopy, X-ray diffraction analysis, and simultaneous thermal analysis methods. Each of the dithiocarbamate ligands performs a μ₃-bridging function, asymmetrically linking three silver atoms. The molecules of the complex are additionally stabilized by argentophilic Ag-Ag bonds (3.0204 Å) formed by each of the silver atoms with two nearest neighbors. The multistage thermal decomposition process of the resulting complex includes desolvation and thermolysis of a six-nuclear cluster with the formation of Ag₂S and elemental silver as intermediate and final products, respectively.