Dicarbonylnitrosylchromium complexes of methylbenzenes and methylcyclohexadienyls
Abstract
The complexes [Cr(CO)3L](I; L = C6HnMe6–n, n= 0–2) react with [NO][PF6] in methanol–toluene, nitromethane, or liquid sulphur dioxide to afford [Cr(CO)2(NO)L][PF6], (II). These cations react with nucleophiles such as H–, D–, or Me– to give neutral cyclohexadienyl complexes [Cr(CO)2(NO)L](III; L = C6Hn+ 1Me6 –n) by exo- attack at the co-ordinated arene.