Lesson plan

Flyover complex

In organometallic chemistry, a flyover complex features two metals bridged by the fragment OC(RC=CR) 2 . Some flyover complexes are symmetrical and some are not. [[File:Cp2Fe2(C4(CF3)4CO)CO CPFMFX10.png|thumb|Structure of an asymmetrical flyover complex (C 5 H 5 ) 2 Fe 2 [(CCF 3 ) 4 CO]CO. The Fe-Fe bond length is 258.8 picometers. Common examples are the iron carbonyl derivatives, which are typically air-stable, soluble in nonpolar solvents, and red-orange in color. These diiron complexes arise by the reaction of alkynes with iron carbonyls. Such reactions are known to generate many products, e.g. complexes of cyclopentadienones and para-quinones. Some ferrole complexes react with tertiary phosphines to give the substituted flyover complex Fe 2 (CO) 5 (PR 3 )(C 4 R 4 CO). They insert alkynes en route to tropones (R 6 C 7 O).

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Article summary

In organometallic chemistry, a flyover complex features two metals bridged by the fragment OC(RC=CR) 2 . Some flyover complexes are symmetrical and some are not. [[File:Cp2Fe2(C4(CF3)4CO)CO CPFMFX10.png|thumb|Structure of an asymmetrical flyover complex (C 5 H 5 ) 2 Fe 2 [(CCF 3 ) 4 CO]CO. The Fe-Fe bond length is 258.8 picometers. Common examples are the iron carbonyl derivatives, which are typically air-stable, soluble in nonpolar solvents, and red-orange in color. These diiron complexes arise by the reaction of alkynes with iron carbonyls. Such reactions are known to generate many products, e.g. complexes of cyclopentadienones and para-quinones. Some ferrole complexes react with tertiary phosphines to give the substituted flyover complex Fe 2 (CO) 5 (PR 3 )(C 4 R 4 CO). They insert alkynes en route to tropones (R 6 C 7 O).

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