- 作者: 陳秋炳; 王勝仁; 周大中
- 作者服務機構: Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, R.O.C.
- 中文摘要: The organometallic radical: (3,5-di-t-butyl-0-benzoquinone)tetracarbonyl-rhenium(0) and its triphenylphosphine substituted derivatives were studied by EPR spectroscopy. The unpaired electron is shown to be localized in the organic 1,2-diketone ligand. The rate of carbonyl substitution by triphenylphosphine at the unsubstituted rhenium radical indicates a second order reaction. The activation parameters are .DELTA.H/sup .neq./=19.1.plmin.0.8Kcal/mole and .DELTA.S/sup .neq./=-3.0.plmin.1.5eu/mole.
- 英文摘要: --
- 中文關鍵字: Organometallic radical; substitution mechanism; Rhenium radical
- 英文關鍵字: Organometallic radical; substitution mechanism; Rhenium radical