Details

Autor(en) / Beteiligte

• Jung, Yun Ku
• Kim, Jae Il
• Lee, Jin-Kyu

Titel

Thermal Decomposition Mechanism of Single-Molecule Precursors Forming Metal Sulfide Nanoparticles

Ist Teil von

• Journal of the American Chemical Society, 2010-01, Vol.132 (1), p.178-184

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2010

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Several zinc alkyldithiocarbamates [Zn(S2CNR2)2] were synthesized, and their thermal decomposition in the presence of alkylamines was studied in order to understand the formation of metal sulfide nanoparticles. The major intermediates and side products were isolated under various conditions and characterized by NMR spectroscopy and LC−MS. The analysis results showed that nucleophilic attack of the metal-coordinated amine on the most electron-deficient thiocarbonyl carbon of the alkyldithiocarbamate ligands at high temperature initiated the decomposition to generate thiourea, hydrogen sulfide, and solid metal sulfide nanoparticles. From the proposed decomposition mechanism, the role of amines in thermolysis was studied, and methods for synthesizing various metal sulfide nanoparticles were generalized. Formation of the desired products was confirmed by carrying out model experiments.