A New Rhodium(I) Hexapentaene Complex Prepared from a Precursor Containing a RhC5 Chain

A New Rhodium(I) Hexapentaene Complex Prepared from a Precursor Containing a RhC5 Chain

The metallacumulene [RhCl(CCCC CPh2)(PiPr3)2] (6) was prepared stepwise from [RhCl(PiPr3)2]2 (1) and HC⋮CC⋮CCPh2OSiMe3 via the π-alkyne complex 2, the diynylhydridorhodium(III) species 3, and the vinylidenerhodium(I) compound 4 as intermediates. The reaction of 6 with CH2N2 affords two isomers...

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Veröffentlicht in:Organometallics 1997-12, Vol.16 (26), p.5607-5609
Hauptverfasser: Kovacik, Ivan, Laubender, Matthias, Werner, Helmut
Format: Artikel
Sprache:eng
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Zusammenfassung:The metallacumulene [RhCl(CCCC CPh2)(PiPr3)2] (6) was prepared stepwise from [RhCl(PiPr3)2]2 (1) and HC⋮CC⋮CCPh2OSiMe3 via the π-alkyne complex 2, the diynylhydridorhodium(III) species 3, and the vinylidenerhodium(I) compound 4 as intermediates. The reaction of 6 with CH2N2 affords two isomers (A and B) of the square-planar rhodium(I) complex 7, in which the hitherto unknown hexapentaene H2CCCCCCPh2 is π-coordinated to the RhCl(PiPr3)2 fragment.
ISSN:0276-7333
1520-6041
DOI:10.1021/om970734t