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- W2010717008 abstract "The compounds [SnBun3(σ-C5H4R)](R = H or Me) have been used to prepare the species [MCl4(C5H4R)](M = Nb or Ta, R = H or Me), [TaX2(η-C5H5)2](X = Cl or Br), and [NbCl2(η-C5H4Me)2] in very high yields. Using these compounds as starting materials the following products have been prepared [NbCl4(η-C5H4Me)L][L = MeCN, PhCN, P(OMe)3, or Ph2PCH2CH2PPh2(dppe)], [Ta(η-C5H5)2H3], and [Ta(η-C5H5)2Y2] where Y2=(SMe)2 or PhCH2Cl. Partial hydrolysis of [NbCl4(η-C5H4Me)] gives the compound [{NbCl3(η-C5H4Me)(OH2)}2O]. Reduction of [NbCl4(η-C5H5)] with [{AlEtCl2}2] in the presence of dppe gives [NbCl3(η-C5H5)(dppe)]·PhMe. This reduces with sodium amalgam in the presence of carbon monoxide giving [Nb(η-C5H5)(dppe)(CO)2] which protonates in acid giving [Nb(η-C5H5)(dppe)(CO)2H][PF6]. The compounds [Pt{Ta(η-C5H5)2(SMe)2}2][PF6]2 and [NbBr3(η-C5H5)(dppe)]·PhMe are also described." @default.
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- W2010717008 date "1980-01-01" @default.
- W2010717008 modified "2023-09-23" @default.
- W2010717008 title "Mono- and bis-η-cyclopentadienyl derivatives of niobium and tantalum: improved synthetic routes via trialkyl(cyclopentadienyl)tin reagents" @default.
- W2010717008 doi "https://doi.org/10.1039/dt9800002155" @default.
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