Synthesis of (carbyne)metal complexes by oxide abstraction from acyl ligands

Article abstract of DOI:10.1021/om00122a035

Stable carbyne complexes of the type trans-X(CO)₂L₂M≡CR (M = Cr, Mo, W; R = C₆H₅, CH₃; X = Cl, Br, CF₃C(O)O, L₂ = 2 pyridine, tetramethylethylenediamine) are prepared in a single synthesis step by reaction of the respective acyl complexes [NMe₄] [(CO)₅MC(O)R] at low temperatures with COCl₂, C₂O₂Cl₂, CIC(O)OCCl₃, C₂O₂Br₂, or (CF₃CO)₂O and subsequent addition of the nitrogenous ligands at warmer temperatures.