Sulphur-containing metal complexes. Part 14. Reactions of carbene anions with carbon disulphide or carbon diselenide

Abstract

The deprotonated aminocarbene complex [Cr(CO)₅{C(NH)Ph}]^–, when treated successively with CS₂ and [Et₃O][BF₄], affords the thiocarbene complex [Cr(CO)₅{C(SEt)Ph}]. Similar reactions with the carbene complex [(OC)₅Mn–Mn(CO)₄{C(NH₂)Ph}] give the nitrite complex [(OC)₅Mn–Mn(CO)₄(NCPh)]. The carbene anion [Cr(CO)₅{C(OEt)CH₂}]^– gives the vinylcarbene derivatives [Cr(CO)₅{C(OEt)CHC(SEt)₂}] and [[graphic omitted]Et)SEt}]. Carbon diselenide is less discriminating towards the nature of the anion, and the triselenocarbonate complex [Cr(CO)₅{SeC(SeEt)₂}] is formed from both carbene anions of chromium.