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Dihalocarbene complexes reactions with nucleophiles

Dihalocarbene complexes are useful precursors to new carbenes by nucleophilic displacement of the chlorine substituents. This has been nicely illustrated for Fe(TPP)(=CCl2) by its reaction with two equivalents of Re(CO)5J to give the unusual /t-carbido complex Fe(TPP)=C=Re(CO)4Re(CO)5 which also contains a rhenium-rhenium bond. " The carbido carbon resonance was observed at 211.7 ppm in the C NMR spectrum. An X-ray crystal structure showed a very short Fe=C bond (1.605(13) A, shorter than comparable carbyne complexes) and a relatively long Re=C bond (1.957( 12) A) (Fig. 4, Table III). " ... [Pg.260]

See other pages where Dihalocarbene complexes reactions with nucleophiles is mentioned: [Pg.245]    [Pg.262]    [Pg.523]   
See also in sourсe #XX -- [ Pg.176 , Pg.177 , Pg.178 ]



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Dihalocarbenes, reactions

Nucleophiles complexes

Nucleophilic complexes

Reaction with nucleophiles

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