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High-pressure spin-crossover in a dinuclear Fe(ii) complex

Shepherd, H.J., Rosa, P., Vendier, L., Casati, N., Létard, J.-F., Bousseksou, A., Guionneau, P., Molnár, G. (2012) High-pressure spin-crossover in a dinuclear Fe(ii) complex. Physical Chemistry Chemical Physics, 14 (15). pp. 5265-5271. ISSN 14639076 (ISSN). E-ISSN 1463-9084. (doi:10.1039/c2cp23940j) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
https://doi.org/10.1039/c2cp23940j

Abstract

The effect of pressure on the dinuclear spin crossover material [{Fe(bpp)(NCS) 2} 2(4,4�-bipy)]·2MeOH (where bpp = 2,6-bis(pyrazol-3-yl)pyridine and 4,4�-bipy = 4,4�-bipyridine, 1) has been investigated with single crystal X-ray diffraction and Raman spectroscopy using diamond anvil cell techniques. The very gradual pressure-induced spin crossover occurs between 7 and 25 kbar, and shows no evidence of crystallographic phase transitions. The pressure-induced spin transition leads to a complete LS state which is not thermally accessible. This structural evolution under pressure is in stark contrast to the previously reported thermal spin crossover behaviour, in which a symmetry-breaking, purely structural phase transition results in only partial conversion to the low spin state. This observation is attributed to the symmetry-breaking phase transition becoming unfavourable under pressure. © 2012 the Owner Societies.

Item Type: Article
DOI/Identification number: 10.1039/c2cp23940j
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Phys. Chem. Chem. Phys. [Field not mapped to EPrints] AD - Laboratoire de Chimie de Coordination, CNRS UPR-8241, Université de Toulouse, Toulouse, France [Field not mapped to EPrints] AD - CNRS, ICMCB, UPR 9048, F-33600 Pessac, France [Field not mapped to EPrints] AD - Diamond Light Source Ltd, Didcot OX11 0DE, Oxon, United Kingdom [Field not mapped to EPrints] AD - Univ. Bordeaux, ICMCB, UPR, F-33600 Pessac, France [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Subjects: Q Science > QD Chemistry > QD473 Physical properties in relation to structure
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 22 Oct 2015 08:15 UTC
Last Modified: 23 Jan 2020 04:10 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50827 (The current URI for this page, for reference purposes)
Shepherd, H.J.: https://orcid.org/0000-0003-0832-4475
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