Synthesis of dibridged diphosphine metal carbonyl complexes and related phosphine transfer reactions

A series of dibridged diphosphine metal complexes of general formula [5,5′-dppx 1-{( η 4-C 6H 7)Fe(CO) 2} 2-( μ-dppx 2)][BF 4] 2 (x 1, x 2=p, p (IX); x 1, x 2=b, b (X); x 1, x 2=n, n (XI); x 1, x 2=h, h (XII); x 1=p, x 2=b (XIII); x 1=b, x 2=n (XIV); x 1=n, x 2=h (XV)) containing both metal–metal an...

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Bibliographic Details
Published in:Journal of organometallic chemistry 1999-02, Vol.574 (2), p.219-227
Main Authors: Brown, David A, Glass, William K, Kelly, Tracy A
Format: Article
Language:English
Subjects:
Carbonyl
Dibridged
Dinuclear
Diphosphine
Iron
Oligomer
Phosphine transfer
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Summary:A series of dibridged diphosphine metal complexes of general formula [5,5′-dppx 1-{( η 4-C 6H 7)Fe(CO) 2} 2-( μ-dppx 2)][BF 4] 2 (x 1, x 2=p, p (IX); x 1, x 2=b, b (X); x 1, x 2=n, n (XI); x 1, x 2=h, h (XII); x 1=p, x 2=b (XIII); x 1=b, x 2=n (XIV); x 1=n, x 2=h (XV)) containing both metal–metal and ring–ring diphosphine bridges are reported. In the course of the synthetic studies, phosphine transfer reactions (both mono and diphosphine) were observed between a metal bonded phosphine and a sufficiently electrophilic metal carbonyl cation. Phosphine transfer also occurs when normal hydride abstraction reactions are attempted with only stoichiometric amounts of [Ph 3C][BF 4].
ISSN:0022-328X
1872-8561
DOI:10.1016/S0022-328X(98)00592-0