Issue 26, 2023
From the journal:

Chemical Science

Controlled introduction of functional groups at one P atom in [Cp*Fe(η5-P5)] and release of functionalised phosphines†

Stephan Reichl,a   Felix Riedlberger,a   Martin Piesch,a   Gábor Balázs,a   Michael Seidla  and  Manfred Scheer ORCID logo *a  

* Corresponding authors

a Institute of Inorganic Chemistry, University Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
E-mail: manfred.scheer@ur.de

Abstract

By salt metathesis reactions of the anionic complexes of the type [Cp*Fe(η4-P5R)]− (R = tBu (1a), Me (1b), –C[triple bond, length as m-dash]CPh (1c); Cp* = 1,2,3,4,5-pentamethylcyclopentadienyl) with organic electrophiles (XRFG; X = halogen; RFG = (CH2)3Br, (CH2)4Br, Me) a variety of organo-substituted polyphosphorus ligand complexes of the type [Cp*Fe(η4-P5RRFG)] (2) are obtained. Thereby, organic substituents with different functional groups (FG), such as halogens or nitriles, are introduced. In [Cp*Fe(η4-P5RR′)] (2a: R = tBu, R′ = (CH2)3Br), the bromine substituent can be easily substituted, leading to functionalized complexes [{Cp*Fe(η4-P5tBu)}(CH2)3{Cp*Fe(η4-P5Me)}] (4) and [Cp*Fe(η4-P5RR′)] (5) (R = tBu, R′ = (CH2)3PPh2) or by abstraction of a phosphine to the asymmetric substituted phosphine tBu(Bn)P(CH2)3Bn (6). The reaction of the dianionic species [K(dme)2]2[Cp*Fe(η4-P5)] (I’) with bromo-nitriles leads to [Cp*Fe{η4-P5((CH2)3CN)2}] (7), allowing the introduction of two functional groups attached to one phosphorus atom. 7 reacts with ZnBr2 in a self-assembly reaction to form the supramolecular compound [Cp*Fe{η4-P5((CH2)3CN)2}ZnBr2]n (8).

Graphical abstract: Controlled introduction of functional groups at one P atom in [Cp*Fe(η5-P5)] and release of functionalised phosphines

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Article information

DOI
https://doi.org/10.1039/D3SC01488F
Article type
Edge Article
Submitted
22 Mar 2023
Accepted
22 May 2023
First published
30 May 2023
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2023,14, 7285-7290

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Controlled introduction of functional groups at one P atom in [Cp*Fe(η5-P5)] and release of functionalised phosphines

S. Reichl, F. Riedlberger, M. Piesch, G. Balázs, M. Seidl and M. Scheer, Chem. Sci., 2023, 14, 7285 DOI: 10.1039/D3SC01488F

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