Neutral and Anionic Tricarbido Complexes of Gold(I)
作者:Rian D. Dewhurst、Anthony F. Hill、Matthew K. Smith
DOI:10.1021/om050528i
日期:2005.11.1
Desilylation of [W(⋮CC⋮CSiMe3)(CO)2L] (L = HB(pz)3, HB(pz‘)3; pz = pyrazol-1-yl, pz‘ = 3,5-dimethylpyrazol-1-yl) with [Bu4N]F in the presence of [AuCl(PPh3)] provides the neutralcomplexes [W(⋮CC⋮CAuPPh3)(CO)2L] in addition to traces of the salt [Bu4N][Au(C⋮CC⋮W(CO)2HB(pz)3})2]. The corresponding salt [N(PPh3)2][Au(C⋮CC⋮W(CO)2HB(pz‘)3})2] may be obtained in high yield via the reaction of [W(⋮CC⋮
Synthesis and reactivity of an anionic allenylidene complex
作者:Anthony F. Hill、Richard A. Manzano
DOI:10.1039/c7dt04576j
日期:——
zolyl)borate) with MeLi generates the first example of an anionic allenylidenecomplex Li[W(CCCMeSiMe3)(CO)2(Tp*)] which reacts with electrophiles (H+, Me+) at the β-carbon to afford vinylcarbyne (allylidyne) complexes [W(CCECMeSiMe3)(CO)2(Tp*)] (E = H, Me), and with bromine provides the unprecedented binuclear bis(carbyne) complex C(CMeSiMe3)CW(CO)2(Tp*)}2via oxidative C–C coupling at the β-carbon
Synthesis and reactivity of selenium functionalised allylidynes and propargylidynes
作者:Anthony F. Hill、Richard A. Manzano、Jas S. Ward
DOI:10.1039/c8dt02370k
日期:——
The reactions of the trimethylsilylpropargylidyne [W(CCCSiMe3)(CO)2(Tp*)] (1: Tp* = hydrotris(dimethylpyrazolyl)borate) towards selenium centred reagents when treated with tetrabutylammonium fluoride (TBAF) were explored in order to prepare alkynylselenolato propargylidynes, e.g., [W(CCCSePh)(CO)2(Tp*)]. Treating 1 with TBAF and PhSeSePh resulted in E and Z isomers of the vinylcarbyne (allylidyne)
A mercury bis(tricarbido) complex: [Hg{CC–CW(CO)<sub>2</sub>Tp}<sub>2</sub>(dmso)<sub>4</sub>](dmso)<sub>2</sub>(Tp = hydrotrispyrazolylborate)
作者:Rian D. Dewhurst、Anthony F. Hill、Anthony C. Willis
DOI:10.1039/b412972e
日期:——
Fluoride mediated desilylation of the propargylidyne complex [W(CâCCSiMe3)(CO)2HB(pz)3}]Â (pz = pyrazol-1-yl) in the presence of mercury(II) chloride provides the novel bis(tricarbido)complex [HgCCâCW(CO)2HB(pz)3}}2], which was structurally characterised as a dmso hexasolvate.