substituents at nitrogen. However, diethylamino-substituted carbene complexes can be synthetized by reaction of the anionic complexes Li[(CO)5MC(NEt)SiR′3] with Et3O+ and show no unusual chemical behaviour. The anionic complexes are prepared by deprotonation of (CO)5MC(NHEt)SiR′3. On heating the pentacarbonyl complexes 1–3 to 100–150°C, in the case of some of the chromium and molybdenum complexes already during
Dialkylaminocarbene络合物(CO)5 MC(NR 2)的SIR' 3(1 - 3)(M =
铬,
钼,W; SIR' 3 = SIPH 3,SIPH 2 Me中,SiPhMe 2 ; NR 2 = NME 2,NMeEt, NC 4 ħ 8,NC 5 H ^ 10)由(CO)的反应而得到的5 MC(OET)SIR' 3与HNR 2。如果空间上要求更高的胺HNEt 2,HNBu n Me或HN(CH 2PH)Me都是使用的,单烷基取代的卡宾络合物(CO)5 MC(NHR)SIR' 3是代替形成,由于在氮有机取代基之一的切割。然而,
二乙基氨基-取代的碳烯配合物可以通过阴离子配合物的Li [(CO)的反应synthetized 5 MC(净)SIR' 3 ]用Et 3 ö +和显示没有异常的
化学行为。阴离子络合物通过(CO)的去质子化作用制备5 MC(NHEt)SIR' 3。在将五