ruthenium(III) complex, [(C5Me5)RuCl2]n, is prepared by the reaction of RuCl3·H2O with C5Me5H in refluxing ethanol. Treatment of [Cp*RuCl2]n (Cp* = C5Me5) with cyclic dienes or α,ω-bis(diphenylphosphino)alkanes gives diamagnetic Ru(II) complexes, Cp*RuCl(diene) or Cp*RuCl(dipos), respectively. Cationic diene complex of ruthenium is formed by the reaction of Cp*RuCl(2,5-norbornadiene) with AgBF4.
Tetramethylarsoles R-As-C(Me)=C(Me)-C(Me)=CMe (R = Ph, Me, (t)Bu) have been obtained from Cp2Zr(C4Me4) and RAsCl2. From these a number of complexes of the type M(CO)5 (arsole) (M = Cr, W), cis-W(CO)4 L(arsole) (L = piperidine, iPr3P), [Cp'Mn(CO)(NO)(arsole)]PF6, [CpRu(PR3)2(arsole)]PF6 ((PR3)2 = (PPh3)2, dppm, dpme), and [Cp*RuL2(arsole)]PF6 (L2 = (PMe3)2, norbornadiene) have been prepared through ligand exchange reactions. For R = Me, Ph the complexes readily undergo Diels-Alder-addition with acetylenedicarboxylic acid dimethyl ester. The 7-arsanorbornadienes formed as intermediates are unstable and decompose into arene and arsinidene complex which in one case has been trapped through consecutive insertion reactions.
Don Tilley; Grubbs, Robert H.; Bercaw, John E., Organometallics, 1984, vol. 3, # 2, p. 274 - 278
作者:Don Tilley、Grubbs, Robert H.、Bercaw, John E.
DOI:——
日期:——
Fagan, Paul J.; Mahoney, Wayne S.; Calabrese, Joseph C., Organometallics, 1990, vol. 9, # 6, p. 1843 - 1852
作者:Fagan, Paul J.、Mahoney, Wayne S.、Calabrese, Joseph C.、Williams, Ian D.