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- W2088049412 abstract "Reaction of YbCp2(DME) (Cp cyclopentadienyl; DME = 1,2-dimethoxyethane) with MCl2 (M Hg, Cd, Zn, Pb, Sn, Cu, Pd, or Co) or MCl (M Ag, Cu or Tl) in tetrahydrofuran (THF) gives the metal M and YbCp2Cl(THF)0.5, generally in excellent yield, with small amounts of TlCp and CoCp2 also detected from TlCl and CoCl2 respectively. Similarly, YbCp2X(THF) (X Br or l) and YbCp2Cl(DME)0.5 have been prepared in good yields by analogous oxidation with suitable mercury(II) halides. However YbCp2(DME) and FeCl3 yield ferrocene. In simpler syntheses. YbCp2X(THF)n (X Cl, n = 0.5; X Br or I, n = 1) have been obtained by reactions of YbCp2(DME) with C2Cl6 or (CH2X)2 (X Br or l) in THF, and (YbCp2X)2 by analogous reactions of unsolvated YbCp2 in petroleum ether. The X-ray crystal structure of YbCp2l(THF) (monoclinic, P21/c, a = 8.147(1), b = 13.788(2), c = 14.149(3) Å, β = 105.56(1)°, Z = 4, R = 0.042, for 2324 observed data) shows the complex to be monomeric with formal eight coordination for ytterbium, and with a pseudo-tetrahedral array of the centroids of the Cp rings, oxygen, and iodine (< YbC > 2.565 Å, YbO 2.311(5) Å, Yb = 12.9316(7) Å)." @default.
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- W2088049412 date "1996-11-01" @default.
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- W2088049412 title "Organolanthanoids XX. The synthesis of YbCp2Cl(THF)0.5 (Cp cyclopentadienyl; THF tetrahydrofuran), YbCp2X(THF) (X Br or I), and (YbCp2X)2 (X Cl, Br, or I) by oxidation of YbCp2 with metal and organic halides, and the determination of the X-ray crystal structure of YbCp2I(THF)" @default.
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- W2088049412 doi "https://doi.org/10.1016/s0022-328x(96)06473-x" @default.
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