TY - JOUR
T1 - Formation of a cyclobutenylidene by cyclo-addition of an alkynyl-ruthenium complex to a cyano(alkynyl) ethene
AU - Armitt, D.J.
AU - Bruce, M.I.
AU - Morris, J.C.
AU - Skelton, Brian
AU - White, Allan
PY - 2009
Y1 - 2009
N2 - n contrast to the usual formal [2+2]-cycloaddition reaction, (NC)2Cdouble bond; length as m-dashC{Ctriple bond; length of mdashC(SiPri3)}2, containing bulky alkynyl substituents, reacts with Ru(Ctriple bond; length of mdashCPh)(PPh3)2Cp to give the unprecedented cyclobutenylidene complex Ru{C(CN)2C[Ctriple bond; length of mdashC(SiPri3)]double bond; length as m-dashCC(SiPri3)double bond; length as m-dashCPhCdouble bond; length as m-dash}(PPh3)Cp, formed by addition of one of the Ctriple bond; length of mdashC(SiPri3) groups to the Ru–Ctriple bond; length of mdashCPh moiety and subsequent electronic reorganisation.Graphical abstractIn contrast to the usual formal [2+2]-cycloaddition reaction, (NC)2Cdouble bond; length as m-dashC{Ctriple bond; length of mdashC(SiPri3)}2 reacts with Ru(Ctriple bond; length of mdashCPh)(PPh3)2Cp to give the unprecedented cyclobutenylidene complex Ru{C(CN)2C[Ctriple bond; length of mdashC(SiPri3)]double bond; length as m-dashCC(SiPri3)double bond; length as m-dashCPhCdouble bond; length as m-dash}(PPh3)Cp 4, formed by addition of one of the Ctriple bond; length of mdashC(SiPri3) groups to the Ru–Ctriple bond; length of mdashCPh moiety and subsequent electronic reorganisation.
AB - n contrast to the usual formal [2+2]-cycloaddition reaction, (NC)2Cdouble bond; length as m-dashC{Ctriple bond; length of mdashC(SiPri3)}2, containing bulky alkynyl substituents, reacts with Ru(Ctriple bond; length of mdashCPh)(PPh3)2Cp to give the unprecedented cyclobutenylidene complex Ru{C(CN)2C[Ctriple bond; length of mdashC(SiPri3)]double bond; length as m-dashCC(SiPri3)double bond; length as m-dashCPhCdouble bond; length as m-dash}(PPh3)Cp, formed by addition of one of the Ctriple bond; length of mdashC(SiPri3) groups to the Ru–Ctriple bond; length of mdashCPh moiety and subsequent electronic reorganisation.Graphical abstractIn contrast to the usual formal [2+2]-cycloaddition reaction, (NC)2Cdouble bond; length as m-dashC{Ctriple bond; length of mdashC(SiPri3)}2 reacts with Ru(Ctriple bond; length of mdashCPh)(PPh3)2Cp to give the unprecedented cyclobutenylidene complex Ru{C(CN)2C[Ctriple bond; length of mdashC(SiPri3)]double bond; length as m-dashCC(SiPri3)double bond; length as m-dashCPhCdouble bond; length as m-dash}(PPh3)Cp 4, formed by addition of one of the Ctriple bond; length of mdashC(SiPri3) groups to the Ru–Ctriple bond; length of mdashCPh moiety and subsequent electronic reorganisation.
U2 - 10.1016/j.jorganchem.2008.09.060
DO - 10.1016/j.jorganchem.2008.09.060
M3 - Article
SN - 0022-328X
VL - 694
SP - 1
EP - 4
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
ER -