title: Functionalization of a cyclo-P₅ ligand by main-group element nucleophiles.
abstract: Unprecedented functionalized products with an η(4)-P5 ring are obtained by the reaction of [Cp*Fe(η(5)-P5)] (1; Cp*=η(5)-C5Me5) with different nucleophiles. With LiCH2SiMe3 and LiNMe2, the monoanionic products [Cp*Fe(η(4)-P5CH2SiMe3)](-) and [Cp*Fe(η(4)-P5NMe2)](-), respectively, are formed. The reaction of 1 with NaNH2 leads to the formation of the trianionic compound [{Cp*Fe(η(4)-P5)}2N](3-), whereas the reaction with LiPH2 yields [Cp*Fe(η(4)-P5PH2)](-) as the main product, with {[Cp*Fe(η(4)-P5)]2PH}(2-) as a byproduct. The calculated energy profile of the reactions provides a rationale for the formation of the different products.
authors.affiliation: University of Regensburg, Institut für Anorganische Chemie, 93040 Regensburg (Germany).
authors.forename: Eric
authors.initials: E
authors.lastname: Mädl
authors.forename: Mikhail V
authors.initials: MV
authors.lastname: Butovskii
authors.forename: Gábor
authors.initials: G
authors.lastname: Balázs
authors.forename: Eugenia V
authors.initials: EV
authors.lastname: Peresypkina
authors.forename: Alexander V
authors.initials: AV
authors.lastname: Virovets
authors.forename: Michael
authors.initials: M
authors.lastname: Seidl
authors.forename: Manfred
authors.initials: M
authors.lastname: Scheer
keywords: density functional calculations; iron; main-group chemistry; nucleophilic attack; phosphorus