Issue 67, 2013
From the journal:

Chemical Communications

Direct observation of the role of lanthanides in stabilizing a ferromagnetic spin orientation in a weak FeIII–FeIII antiferromagnet†

Hua Xiang,ab   Valeriu Mereacre,*a   Yanhua Lan,a   Tong-Bu Lu,*b   Christopher E. Ansona  and  Annie K. Powell*ac  

* Corresponding authors

a Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76128 Karlsruhe, Germany
E-mail: valeriu.mereacre@kit.edu, annie.powell@kit.edu
Fax: +49 721-608-48142
Tel: +49 721-608-42135

b MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China

c Institute of Nanotechnology, Karlsruhe Institute of Technology, Postfach 3640, 76021 Karlsruhe, Germany

Abstract

[FeIII2LnIII2(OH)2(L1)2(HL2)2(NO3)4(H2O)1½(MeOH)½]·6MeCN (Ln = Y (1), Dy (2); H2L1 = 2,3-dihydroxybenzaldehyde and H2L2 is the Schiff base of this aldehyde with furfurylamine) have unusually weak antiferromagnetic interactions between the FeIII centres in comparison with other (μ-dihydroxo)diiron(III) complexes. For 1, it was established that modulation of the hydroxo bridges by coordination to the YIII ions results in long Fe–O bonds and small Fe–O–Fe angles, leading to J = −0.4 cm−1. Analysis of the Mössbauer spectra reveals that the intramolecular magnetic field generated by the anisotropic DyIII ions in 2 is sufficient to overcome the Fe–Fe antiferromagnetic coupling and reorientate the FeIII moments into a ferromagnetic spin orientation.

Graphical abstract: Direct observation of the role of lanthanides in stabilizing a ferromagnetic spin orientation in a weak FeIII–FeIII antiferromagnet

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C3CC42416B
Article type
Communication
Submitted
03 Apr 2013
Accepted
07 May 2013
First published
09 May 2013

Chem. Commun., 2013,49, 7385-7387

Permissions

Request permissions

Direct observation of the role of lanthanides in stabilizing a ferromagnetic spin orientation in a weak FeIII–FeIII antiferromagnet

H. Xiang, V. Mereacre, Y. Lan, T. Lu, C. E. Anson and A. K. Powell, Chem. Commun., 2013, 49, 7385 DOI: 10.1039/C3CC42416B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements