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BIBTEX RIS

Stabilization of a catalytically syndiotactic-specific metallocene cation by trimethylphosphine. The crystal structure of [(η5-C5H4)CMe2η5-(C13H8)ZrMePME3]+ [B(C6F5)4]−

1993; Elsevier BV; Volume: 445; Issue: 1-2 Linguagem: Inglês

10.1016/0022-328x(93)80195-h

ISSN

1872-8561

Autores

Abbas Razavi, Ulf Thewalt,

Tópico(s)

Asymmetric Hydrogenation and Catalysis

Resumo

The reaction of (η5-C5H4)CMe2-η5-(C13H8)ZrMe2 with (C6H5)3CB(C6F5)4 in toluene at ambient temperature leads to the formation of the [(η5-C5H4)CMe2-η5-(C13H8)ZrMe]+ cation in solution. The chemically highly-reactive cation can be stabilized and isolated by addition of a stoichiometric amount of the Lewis base PMe3 to the reaction mixture. The stabilized cation has been characterized by NMR spectroscopy and an X-ray diffraction study.

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