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[Fe(abpt)2(NCSe)2] polymorph A: structural studies into the spin crossover behaviour

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Abstract

The spin crossover behaviour of [Fe(abpt)2(NCSe)2] (abpt = 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole) polymorph A has been examined using single crystal X-ray diffraction and variable temperature UV-Vis transmission spectroscopy. The crystal structure of A is reported at sixteen temperatures between 30 and 375 K, all of which are in the monoclinic space group P21/n with Z′ = 0.5. Changes in the crystallographic cell parameters, bond lengths, distortion parameters and intra and intermolecular interactions between 375 K and 30 K are discussed. Continuous irradiation with a 670 nm, 5 mW CW laser at 30 K enabled a light induced excited spin state trapping (LIESST) metastable high spin structure, HS*, to be obtained.

Graphical abstract: [Fe(abpt)2(NCSe)2] polymorph A: structural studies into the spin crossover behaviour

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Publication details

The article was received on 20 Jul 2018, accepted on 09 Oct 2018 and first published on 09 Oct 2018


Article type: Paper
DOI: 10.1039/C8NJ03627F
Citation: New J. Chem., 2018, Advance Article
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    [Fe(abpt)2(NCSe)2] polymorph A: structural studies into the spin crossover behaviour

    H. E. Mason, M. L. Hamilton, J. A. K. Howard and H. A. Sparkes, New J. Chem., 2018, Advance Article , DOI: 10.1039/C8NJ03627F

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