A new synthetic entry to phosphinophosphinidene complexes. Synthesis and structural characterisation of the first side-on bonded and the first terminally bonded phosphinophosphinidene zirconium complexes [μ-(1,2∶2-η-tBu2PP){Zr(Cl)Cp2}2] and [{Zr(PPhMe2)Cp2}(η1-P–PtBu2)]

Jerzy Pikies; Elke Baum; Eberhard Matern; Jarosław Chojnacki; Rafał Grubba; Andrzej Robaszkiewicz

doi:10.1039/B409673H

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A new synthetic entry to phosphinophosphinidene complexes. Synthesis and structural characterisation of the first side-on bonded and the first terminally bonded phosphinophosphinidene zirconium complexes [μ-(1,2∶2-η-^tBu₂PP){Zr(Cl)Cp₂}₂] and [{Zr(PPhMe₂)Cp₂}(η¹-P–P^tBu₂)]†

Jerzy Pikies,*^b Elke Baum,^a Eberhard Matern,^a Jarosław Chojnacki,^b Rafał Grubba^b and Andrzej Robaszkiewicz^b

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* Corresponding authors

^a Institut für Anorganische Chemie der Universität (TH), Engesserstr. 15 Geb. Nr. 30.45, Karlsruhe, Germany

^b Chemical Faculty, Gdańsk University of Technology, ul. Narutowicza 11/12, Gdańsk, Poland
E-mail: pikies@chem.pg.gda.pl
Fax: +48 58 3472694
Tel: +48 58 3472622

Abstract

The reactions of lithiated diphosphanes with transition metal chlorides constitute a new general entry to phosphinophosphinidene complexes: the reaction of Cp₂ZrCl₂ (Cp = C₅H₅) with ^tBu₂P–P(SiMe₃)Li (molar ratio ∼1 ∶ 1) yields [μ-(1,2∶2-η-^tBu₂P [double bond, length as m-dash] P){Zr(Cl)Cp₂}₂]; the reaction of Cp₂ZrCl₂ with ^tBu₂P–P(SiMe₃)Li (molar ratio ∼1 ∶ 2) and an excess of PPhMe₂ in DME yields the first terminally bonded phosphinophosphinidene complex, [{Zr(PPhMe₂)Cp₂}(η¹-P–P^tBu₂)].

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Article information

DOI: https://doi.org/10.1039/B409673H
Article type: Communication
Submitted: 25 Jun 2004
Accepted: 12 Aug 2004
First published: 16 Sep 2004

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Chem. Commun., 2004, 2478-2479

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A new synthetic entry to phosphinophosphinidene complexes. Synthesis and structural characterisation of the first side-on bonded and the first terminally bonded phosphinophosphinidene zirconium complexes [μ-(1,2∶2-η-^tBu₂PP){Zr(Cl)Cp₂}₂] and [{Zr(PPhMe₂)Cp₂}(η¹-P–P^tBu₂)]

J. Pikies, E. Baum, E. Matern, J. Chojnacki, R. Grubba and A. Robaszkiewicz, Chem. Commun., 2004, 2478 DOI: 10.1039/B409673H

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