Arsinocarbyne reactivity.
Benjamin J FrogleyAnthony F HillPublished in: Dalton transactions (Cambridge, England : 2003) (2022)
The reactivity of the tungsten diphenylarsinocarbyne [W(CAsPh 2 )(CO) 2 (Tp*)] (1; Tp* = hydrotris(dimethylpyrazolyl)borato) is described. The pyramidal arsenic coordinates to a selection of 5d metal centres, forming heterobi- or trimetallic complexes with osmium(II), iridium(III), platinum(II) and gold(I). In the latter case, the WC bond provides a competitive site for gold(I) coordination. Treatment with MeOSO 2 CF 3 results in methylation at arsenic to give the first example of an arsoniocarbyne, [W(CAsPh 2 CH 3 )(CO) 2 (Tp*)]O 3 SCF 3 , for which only the WC bond remains available for gold(I) coordination.