Flyover complex explained
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.Common examples are the iron carbonyl derivatives, which are typically air-stable, soluble in nonpolar solvents, and red-orange in color.[1] 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.[2]
Some ferrole complexes react with tertiary phosphines to give the substituted flyover complex Fe2(CO)5(PR3)(C4R4CO). They insert alkynes en route to tropones (R6C7O).[3] [4]
References
- Book: 10.1016/B978-008046518-0.00051-9. Dinuclear Iron Compounds with Hydrocarbon Ligands. Comprehensive Organometallic Chemistry. 1982. Fehlhammer. W.P.. Stolzenberg. H.. 513–613. 9780080465180. Geoffrey Wilkinson. F. Gordon A. Stone. Edward W. Abel.
- Book: Organic Syntheses via Metal Carbonyls Volume 1. 1968. Piero Pino. Irving Wender. Wiley Interscience. NY.
- 10.1016/0022-328X(95)05936-J. Reactions of the 'Ferrole' Complex [Fe<sub>2</sub>(CO)<sub>6</sub>(C<sub>2</sub>Et<sub>2</sub>)<sub>2</sub>] with Group 15 Donor Ligands and with Alkynes. Stepwise Formation and Disengagement of Tropones. Crystal and Molecular Structure of [Fe<sub>2</sub>(CO)<sub>5</sub>{(CEt)<sub>2</sub>CO(CEt)<sub>2</sub>CHCPh}]. 1996. Giordano. Roberto. Sappa. Enrico. Cauzzi. Daniele. Predieri. Giovanni. Tiripicchio. Antonio. Journal of Organometallic Chemistry. 511. 1–2. 263–271.
- Book: 10.1016/B978-008046519-7.00058-7. Dinuclear Iron Compounds with Hydrocarbon Ligands. Comprehensive Organometallic Chemistry II. 1995. Fagan. Paul J.. 231–258. 9780080465197.
