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- W2952583577 abstract "This chapter reviews the types of complexes obtained from the reactions of metal carbonyls with cyclic diazenes of different steric and electronic properties. It describes thermal and photochemical reactions of some diazene iron complexes with alkynes and 1,3-dienes. Complexes of di-imine and bis(trimethylsily1)diazene with metal carbonyls and cyclopentadienyl metal fragments, respectively, have been recently reviewed. 1,2-Diphenyldiazenes (azobenzenes) usually react with metal carbonyls by orthometallation. The N=N bond character of the n1 orbital remains zero whereas for the n2 orbital it increases from 9 to 12 and 16%, respectively, in the diazene sequence, in contrast, the N=N character decreases from 85 to 80 and 74%, respectively, for the π MO but remains almost constant (96–100%) for the lowest unoccupied molecular orbital (LUMO). The initial interaction of a diazene with a metal is mainly determined by the nature of the highest occupied molecular orbital (HOMO) that has a more or less pronounced lone pair character. This explains the good ability of diazenes to form mononuclear σ complexes of types I and II wherein the diazene ligand acts as two-electron donor." @default.
- W2952583577 created "2019-06-27" @default.
- W2952583577 creator A5043642101 @default.
- W2952583577 creator A5046874282 @default.
- W2952583577 date "1992-01-01" @default.
- W2952583577 modified "2023-09-23" @default.
- W2952583577 title "Organometallic Chemistry of the N=N Group" @default.
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