RT info:eu-repo/semantics/article
T1 Hydride derivatives of Group 4 metals with the ansa-(SiMe2)2(η5-C5H3)2 ligand
A1 Cuenca Agreda, José Tomás
A1 Galakhov, Mikhail V.
A1 Royo Cantabrana, Eva
A1 Royo Gracia, Pascual
K1 Zr
K1 Hf
K1 Si
K1 Ansu-cyclopentadienyl complexes
K1 Silylcyclopentadienyls
K1 Hydrides
K1 Ciencia
K1 Química inorgánica
K1 Science
K1 Chemistry, inorganic
AB The dinuclear hydrides [M(CpSi2Cp)H(η-H)]2[M = Zr (1), Hf (2); (CpSi2Cp) = [(SiMe2)2(η5-C5H3)2]] have been synthesized by reaction of the corresponding dichloro compounds M(CpSi2Cp)Cl2 [M = Zr, Hf] with LiBHEt3 in a molar ratio of 1:2. Related deutero derivatives [M(CPSi2Cp)D(η-D)]2 [M = Zr (3), Hf (4)] were obtained by using LiBDEt3. When the same reaction was carried out with Ti(CpSi2Cp)Cl2, the formation of unidentified titanium(III) species was observed. These compounds have been characterized by the usual analytical and spectroscopic methods. The 1H NMR study of the reaction of complex 1 with traces of water in deuterated tetrahydrofuran shows that the terminal hydrides are more reactive than the bridging hydrides, and only one of the terminal hydrides reacts selectively. Complex 1 shows a rigid behaviour in the NMR time scale between -80°C (500 MHz) and + 80°C (300 MHz).
PB Elsevier
SN 0022-328X
YR 1996
FD 1996
LK http://hdl.handle.net/10017/4557
UL http://hdl.handle.net/10017/4557
LA eng
DS MINDS@UW
RD 26-abr-2024