Exposure of (C5H5)2MO(CH3)2 and (C5H5)2W(CH3)2, prepared from the corresponding dichlorides, to 20Co γ-rays at 77 K gave H2C.CML3 carbene species characterised by their ESR spectra, together with a central feature possibly due to the parent cations. Dilute solutions in CD3OD gave features assigned to the parent anions which were converted on bleaching with visible light into methyl radicals, and H2C
将由相应的二
氯化物制得的(C 5 H 5)2 MO(CH 3)2和(C 5 H 5)2 W(CH 3)2暴露于77 K下的20 Coγ射线中,得到H 2 C. CML 3卡宾物种的特征在于其ESR光谱以及可能由于母体阳离子引起的中心特征。用CD 3 OD稀释的溶液具有与母体阴离子相关的特征,这些特征在可见光漂白下转化为
甲基自由基和H 2 C.ML 3部首。从1 H和183 W超精细偶合常数的大小,可以推断出H 2 C.WL 3自由基的SOMO强烈地局限在碳上。