Issue 36, 2009
From the journal:

Dalton Transactions

High pressure effects on a trimetallic MnII/III SMM†

Alessandro Prescimone,a   Javier Sanchez-Benitez,b   Konstantin V. Kamenev,b   Stephen A. Moggach,a   Alistair R. Lennie,c   John E. Warren,c   Mark Murrie,d   Simon Parsons*a  and  Euan K. Brechin*a  

* Corresponding authors

a School of Chemistry, The University of Edinburgh, West Mains Road, Edinburgh, UK
E-mail: ebrechin@staffmail.ed.ac.uk, s.parsons@ed.ac.uk

b School of Engineering and Centre for Science at Extreme Conditions, The University of Edinburgh, West Mains Road, Edinburgh, UK

c Synchrotron Radiation Source, STFC Daresbury Laboratory, Warrington, Cheshire, UK

d WestCHEM, Department of Chemistry, University of Glasgow, University Avenue, Glasgow, UK

Abstract

A combined study of the high pressure crystallography and high pressure magnetism of the complex [Mn3(Hcht)2(bpy)4](ClO4)3·Et2O·2MeCN (1·Et2O·2MeCN) (H3cht is cis,cis-1,3,5-cyclohexanetriol) is presented in an attempt to observe and correlate pressure induced changes in its structural and physical properties. At 0.16 GPa the complex 1·Et2O·2MeCN loses all associated solvent in the crystal lattice, becoming 1. At higher pressures structural distortions occur changing the distances between the metal centres and the bridging oxygen atoms making the magnetic exchange between the manganese ions weaker. No significant variations are observed in the Jahn–Teller axis of the only MnIII present in the structure. High pressure dc χMT plots display a gradual decrease in both the low temperature value and slope. Simulations show a decrease in J with increasing pressure although the ground state is preserved. Magnetisation data do not show any change in |D|.

Graphical abstract: High pressure effects on a trimetallic MnII/III SMM

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Article information

DOI
https://doi.org/10.1039/B908718D
Article type
Paper
Submitted
01 May 2009
Accepted
06 Jul 2009
First published
20 Jul 2009

Dalton Trans., 2009, 7390-7395

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High pressure effects on a trimetallic MnII/III SMM

A. Prescimone, J. Sanchez-Benitez, K. V. Kamenev, S. A. Moggach, A. R. Lennie, J. E. Warren, M. Murrie, S. Parsons and E. K. Brechin, Dalton Trans., 2009, 7390 DOI: 10.1039/B908718D

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