RT info:eu-repo/semantics/article T1 Synthesis of chloro and methyl imido cyclopentadienyl molybdenum and tungsten complexes. X-ray molecular structures of [WCp*C13(NtBu)], [MoCp*C1Me2(NtBu) ] and [WCp*C1Me2(NtBu) ] A1 Gómez Sal, Pilar A1 Jiménez Sanz, Ignacio A1 Martín Alonso, Avelino A1 Pedraz Gallego, Teresa A1 Royo Gracia, Pascual A1 Sellés Peñaranda, Alberto A1 Vázquez de Miguel, Amelio K1 Molybdenum complexes K1 Tungsten complexes K1 Imido complexes K1 AIkyl complexes K1 Cyclopentadienyl complexes K1 Crystal structures K1 Ciencia K1 Química inorgánica K1 Science K1 Chemistry, inorganic AB Alternative methods to prepare [MCp'C14], [MCp'CL(N'Bu)] and [MCp'CI~(N'Bu)] [M=Mo, Cp'="qs-C~Me~ (Cp*); M=W,Cp' = r/5-CsH5 (Cp), r/5-CsMe5 (Cp*) ] in high yields are reported. Alkylation of [MCp'CI3(N'Bu) ] with stoichiometric amounts of LiMeor MeMgC1 under appropriate conditions leads to the dimethyl [MCp'CIMe2(N'Bu)] and trimethyl [MCp'Me~(N'Bu)], (M=Mo,Cp' = Cp*; M = W, Cp' = Cp, Cp* ) complexes. The 18-electron trimethyltungsten complex [WCp*Me~(N'Bu) ] reacts very slowly withCN(2,6-Me2C~,H3) to give the insertion product [WCp*{C(Me)= N(2,6-Me2C6H3)}Me2(N'Bu)]. All of the new compounds reportedwere characterized by elemental analyses, IR and NMR spectroscopy and the X-ray molecular structures of [WCp*CI~(N'Bu)],[ MoCp*CIMe2( N'Bu ) ] and [ WCp*C1Me_,.(NtBu ) ] have been determined by diffraction methods. O 1998 Elsevier Science S.A. All rightsreserved. PB Elsevier SN 0020-1693 YR 1998 FD 1998 LK http://hdl.handle.net/10017/4278 UL http://hdl.handle.net/10017/4278 LA eng NO The authors acknowledge DGICYT (Project PB92-0178-C) and CAM (I + D 0033/94) for financial support. DS MINDS@UW RD 25-abr-2024