RT info:eu-repo/semantics/article
T1 Dicyclopentadienyltantalum complexes
A1 Antiñolo García, Antonio
A1 Fajardo, Mariano
A1 Otero Montero, Antonio
A1 Royo Gracia, Pascual
K1 Dicyclopentadienyltantalum
K1 Ciencia
K1 Química inorgánica
K1 Science
K1 Chemistry, inorganic
AB The reduction of (η5-C5H52TaCl2 with Na/Hg or NaNaph yields the dimer (η5-C5H5)4Ta2Cl3(I) containing tantalum(III) and tantalum(IV), whereas the same reduction in a 1/1 molar ratio gives (η5-C5H52 TaCl(II). Use of NaBH4 gives the boranate complex (η5-C5H5)2TaBH4 (III). Complex II behaves as a Lewis acid with π-acid ligands and metal halides MXY2 to give (η5-C5H5)2TaCIL (L = CO (IV), PMe2 Ph(V), PPh3 (VI), PhC CPh(VII)) and(η5-C5H5)2Ta(μ-X)MY2, (M = Fe, X = Y = Cl (VIII), M = Tl, X = Y = Cl (IX), M = Al, X = Y = Cl (X), M = Tl, X = Br, Y = C6F5 (XI)). Reactions of (η5-C5H5)2TaCl2 with metal halides MXY2 give (η5-C5H52 TaCl(μ-Cl)MXY2 (M = Al, X = Y = Cl (XII), M = Fe, X = Y = Cl (XIII), M = Tl, X = Y = Cl (XIV), M = Tl, X = Br, Y = Br, Y = C6F5 (XV)) and [(η5-C5H52Ta(μ-Cl)2]+ MCl4- (M = Fe (XVI), Al (XVII)). Reaction of I with AgCIO4 gives [(η5-C5H5)4Ta2Cl2]+ ClO4- (XVIII). Complex III behaves also as a Lewis acid and reacts with π-acid ligands to give (η5-C5H5)2Ta(H)(L) (L = CO (XIX), PEt3 (XX), PPh3 (XXI)). The chemical and structural behaviour of these complexes are described.
PB Elsevier
SN 0022-328X
YR 1983
FD 1983
LK http://hdl.handle.net/10017/4806
UL http://hdl.handle.net/10017/4806
LA eng
NO We gratefully acknowledge financial support from the Comisión Asesora de Investigación Científica y Técnica (Spain).
DS MINDS@UW
RD 26-abr-2024