Jump to main content
Jump to site search

Issue 1, 2016
Previous Article Next Article

Surface induces different crystal structures in a room temperature switchable spin crossover compound

Author affiliations

Abstract

We investigated the influence of surfaces in the formation of different crystal structures of a spin crossover compound, namely [Fe(L)2] (LH: (2-(pyrazol-1-yl)-6-(1H-tetrazol-5-yl)pyridine), which is a neutral compound thermally switchable around room temperature. We observed that the surface induces the formation of two different crystal structures, which exhibit opposite spin transitions, i.e. on heating them up to the transition temperature, one polymorph switches from high spin to low spin and the second polymorph switches irreversibly from low spin to high spin. We attributed this inversion to the presence of water molecules H-bonded to the complex tetrazolyl moieties in the crystals. Thin deposits were investigated by means of polarized optical microscopy, atomic force microscopy, X-ray diffraction, X-ray absorption spectroscopy and micro Raman spectroscopy; moreover the analysis of the Raman spectra and the interpretation of spin inversion were supported by DFT calculations.

Graphical abstract: Surface induces different crystal structures in a room temperature switchable spin crossover compound

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Sep 2015, accepted on 02 Nov 2015 and first published on 02 Nov 2015


Article type: Paper
DOI: 10.1039/C5DT03712C
Author version available: Download Author version (PDF)
Citation: Dalton Trans., 2016,45, 134-143
  •   Request permissions

    Surface induces different crystal structures in a room temperature switchable spin crossover compound

    D. Gentili, F. Liscio, N. Demitri, B. Schäfer, F. Borgatti, P. Torelli, B. Gobaut, G. Panaccione, G. Rossi, A. Degli Esposti, M. Gazzano, S. Milita, I. Bergenti, G. Ruani, I. Šalitroš, M. Ruben and M. Cavallini, Dalton Trans., 2016, 45, 134
    DOI: 10.1039/C5DT03712C

Search articles by author

Spotlight

Advertisements