Simple Os carbyne complexes (HC≡OsH3, HC≡OsH2F, HC≡OsH2Cl, HC≡OsH2Br, and CH3C≡OsH3) are produced in reactions of laser-ablated Os atoms with small alkanes and methyl halides via oxidative C−H insertion and α-hydrogen migration. The diagnostic methylidyne C—H stretching absorptions of HC≡OsH3 and its halide derivatives are observed about 200 cm−1 above the precursor C—H stretching bands, and the frequencies
简单
锇卡宾络合物(HC≡OSH 3,HC≡OSH 2女,HC≡OSH 2
氯,HC≡OSH 2 Br和CH 3 C≡OSH 3)在与小
烷烃和激光烧蚀
锇原子的反应所产生的甲基卤化物通过氧化的CH插入和α-氢迁移。在前体CH伸缩带上方约200 cm -1处观察到HC = OSH 3及其卤化物衍
生物的诊断性亚甲基CHH伸缩吸收,其频率与CH键杂交中的s特性一致。的次甲基络合物所有已经计算Ç小号结构,特别是HC≡OSH 3和
CH3个C≡OSH 3络合物具有两个等价较短和较长的一个OS-H键,平行于Re的类似配合物的情况下。在异常低的频率下强大的独特OS-H拉伸吸收可以追溯到双重占据的HOMO中长OS-H键和反键特性的拉伸模式。