title: Rearrangement of bis(alkylidynyl)phosphines to phospha-acyls.
abstract: A range of bis(alkylidynyl)phosphines RP{C[triple bond, length as m-dash]M(CO)2(Tp*)}2(M = Mo, W; R = Cl, Ph, Cy; Tp* = hydrotris(dimethylpyrazolyl)borate) are obtained from the reactions of [M([triple bond, length as m-dash]CLi)(CO)2(Tp*)] with Cl2PR or alternatively via the palladium(0)-mediated reactions of [W([triple bond, length as m-dash]CBr)(CO)2(Tp*)] with RPH2(R = Py, Cy). The complexes RP{C[triple bond, length as m-dash]W(CO)2(Tp*)}2rearrange slowly (R = Cl) or on heating (R = Ph) to afford the isomeric phospha-acyls [W2(μ:η1-C;η2-C,P-CCPR)(CO)4(Tp*)2].
authors.affiliation: Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory, ACT 2601, Australia. a.hill@anu.edu.au.
authors.forename: Annie L
authors.initials: AL
authors.lastname: Colebatch
authors.forename: Yong-Shen
authors.initials: YS
authors.lastname: Han
authors.forename: Anthony F
authors.initials: AF
authors.lastname: Hill
authors.forename: Manab
authors.initials: M
authors.lastname: Sharma
authors.forename: Rong
authors.initials: R
authors.lastname: Shang
authors.forename: Jas S
authors.initials: JS
authors.lastname: Ward