Issue 42, 2007
From the journal:

Chemical Communications

Unusual mixed valent FeIIIFeII complex (St = 3/2) stabilised by a reduced bulky 1,2-diketone

Geoffrey H. Spikes,a   Eckhard Bill,a   Thomas Weyhermüllera  and  Karl Wieghardt*a  

* Corresponding authors

a MPI für Bioanorganische Chemie, Stiftstrasse 34-36, Mülheim an der Ruhr, Germany
E-mail: wieghardt@mpi-muelheim.mpg.de
Fax: +49 0208-306-3952
Tel: +49 0208-306-3610

Abstract

The reduction of the bulky 1,2-diketone bis(2,6-diisopropylphenyl)glyoxal (1) and FeBr2 with 1.5 equivalents of Na results in a Class 2 mixed valent H.S. FeII L.S. FeIII complex (2) with two five-coordinate Fe centres which are antiferromagnetically exchange-coupled to give a total spin St = 3/2 ground state and an St = 5/2 excited state that are separated by about 25 cm−1 (for ΔJ ≈ 5J)

Graphical abstract: Unusual mixed valent FeIIIFeII complex (St = 3/2) stabilised by a reduced bulky 1,2-diketone

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Article information

DOI
https://doi.org/10.1039/B713062G
Article type
Communication
Submitted
24 Aug 2007
Accepted
18 Sep 2007
First published
04 Oct 2007

Chem. Commun., 2007, 4339-4341

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Unusual mixed valent FeIIIFeII complex (St = 3/2) stabilised by a reduced bulky 1,2-diketone

G. H. Spikes, E. Bill, T. Weyhermüller and K. Wieghardt, Chem. Commun., 2007, 4339 DOI: 10.1039/B713062G

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