Issue 11, 2013
From the journal:

RSC Advances

Thermal conversion of [Fe(phen)3](SCN)2 thin films into the spin crossover complex Fe(phen)2(NCS)2†

Edward C. Ellingsworth,a   Brittany Turnerab  and  Greg Szulczewski*a  

* Corresponding authors

a Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, AL, USA
E-mail: gjs@bama.ua.edu
Fax: +1 205 348 9104
Tel: +1 205 348 0610

b Department of Chemistry, Texas A&M University, PO Box 30012, College Station, TX, USA
Fax: +1 979 845 4719
Tel: +1 979 845 7647

Abstract

Heating the spin-crossover (SCO) complex FeII(phen)2(NCS)2 (phen = 1,10-phenanthroline) under high vacuum results in the formation of red films that have been identified as [FeII(phen)3](SCN)2 by IR, Raman, and UV-Vis spectroscopy. After annealing the red films to ∼140 °C under vacuum, purple (paramagnetic) films form and have been identified as Fe(phen)2(NCS)2 by SQUID magnetometry, X-ray photoelectron, Raman and IR spectroscopy. The Fe(phen)2(NCS)2 films exhibit a SCO transition at ∼180 K with a broadened transition temperature range between the high-spin and low-spin states (∼20 K) when compared to the bulk phase, which is ascribed to a broad distribution of molecular environments.

Graphical abstract: Thermal conversion of [Fe(phen)3](SCN)2 thin films into the spin crossover complex Fe(phen)2(NCS)2

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Article information

DOI
https://doi.org/10.1039/C3RA22534H
Article type
Paper
Submitted
16 Oct 2012
Accepted
09 Jan 2013
First published
06 Feb 2013

RSC Adv., 2013,3, 3745-3754

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Thermal conversion of [Fe(phen)3](SCN)2 thin films into the spin crossover complex Fe(phen)2(NCS)2

E. C. Ellingsworth, B. Turner and G. Szulczewski, RSC Adv., 2013, 3, 3745 DOI: 10.1039/C3RA22534H

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