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Reactivity of a diphosphazirconocene dichloride, (η5-C4Me4P)2ZrCl2. Crystal and molecular structure of a metal-bridged bis(π-heterocyclopentadienyl)zirconium complex, (CO)3Fe(μ-η5,η1-C4Me4P)2ZrCl2

1990; Elsevier BV; Volume: 384; Issue: 3 Linguagem: Inglês

10.1016/0022-328x(90)87120-3

1872-8561

F. Nief, François Mathey, Louis Ricard,

Asymmetric Hydrogenation and Catalysis

Reaction at the Zr centre in (η5-C4Me4P)2ZrCl2 (1) is exemplified by the reaction with MeLi or PhLi to give (η5-C4Me4P)2ZrR2, with R = Me or Ph. Complex 1 can also react through the lone pair on the P atom with L2M(CO)n to give chelates (CO)nM(μ-η5,η1-C4Me4P)2ZrCl2 where M(CO)n = Fe(CO)3 or W(CO)4, in which a new type of bridging η5-ligand is present. The crystal structure of (CO)3Fe(μ-η5,η1-C4Me4P)2ZrCl2 is described.