RT info:eu-repo/semantics/article
T1 Synthesis and characterization of tert-butylcyclopentadienyl derivatives of hafnium
A1 Cuenca Agreda, José Tomás
A1 Montejano Calvo, Cristina Montserrat
A1 Royo Gracia, Pascual
K1 Hafnium
K1 Cyclopentadienyls
K1 Preparation
K1 Ciencia
K1 Química inorgánica
K1 Science
K1 Chemistry, inorganic
AB Reaction of Si(C5H3-1,3-tBu2)Me3 with HfCl4 in toluene or hexane at room temperature afforded the new trichloro monocyclopentadienyl derivatives [Hf(η5-C5H3-1,3-tBu2)Cl3] (1). Treatment of [Hf(η5-C5H3-1,3-tBu2)Cl3] with the appropriate alkylating reagent in hexane gave the mono[1,3-di(tert-butyl)cyclopentadienyl] trialkyl hafnium complexes [Hf(η5-C5H3-1,3-tBu2)R3] [R  CH3 (2), CH2C6H5 (3), CH2Si(CH3)3 (4)].When [Hf(η5-C5H3-1,3-tBu2)Cl3] reacts with 1 equivalent of TlCp in toluene at room temperature the mixed dicyclopentadienyl complex [Hf(η5-C5H3-1,3-tBu2)(η5-C5H5)Cl2] (5) was isolated in almost quantitative yield. Reaction of 5 with LiMe led to the dimethyl complex [Hf(η5-C5H3-1,3-tBu2)(η5-C5H5)(CH3)2] (6). However, the analogous reaction of a hexane solution of 5 with MgBz2 · 2THF in the presence of traces of water afforded the μ oxo derivative [{Hf(η5-C5H3-1,3-tBu2)(η5-C5H5)(CH2C6H5)} 2(μ-O)] (7).
PB Elsevier
SN 0022-328X
YR 1996
FD 1996
LK http://hdl.handle.net/10017/4553
UL http://hdl.handle.net/10017/4553
LA eng
DS MINDS@UW
RD 02-may-2024