|
|Section2= |Section3= |Section7= |Section8= }} Trimethylarsine is the chemical compound with the formula (CH3)3As, commonly abbreviated AsMe3 or TMAs. This organic derivative of arsine has been used as a source of arsenic in microelectronics industry,〔 〕 a building block to other organoarsenic compounds, and serves as a ligand in coordination chemistry. It has distinct "garlic"-like smell. Trimethylarsine had been discovered as early as 1854. ==Structure and preparation== As predicted by VSEPR theory, AsMe3 is a pyramidal molecule. The As-C distances average 1.519 Å, and the C-As-C angles are 91.83° This bond angle is a strong indication of a low, if any, hybridisation of the atomic orbitals, leaving the lone pair in the s-orbital buried in the inner regions of the arsenic atom, rather than pointing outward like the lone pair of the ammonia molecule. Trimethylarsine can be prepared by treatment of arsenic oxide with trimethylaluminium:〔V. V. Gavrilenko, L. A. Chekulaeva, and I. V. Pisareva, "Highly efficient synthesis of trimethylarsine" Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 2122–2123, 1996.〕 :As2O3 + 1.5 ()2 → 2 AsMe3 + 3/n (MeAl-O)n 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「trimethylarsine」の詳細全文を読む スポンサード リンク
|