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Direct Monitoring of Spin Transition at a High T1/2 Value in a Dinuclear Triple-Stranded Helicate Iron(II) Complex Through X-ray Pho-toelectron Spectroscopy

Abstract

A dinuclear helical iron(II) complex of a new ditopic thiazolyimine ligand (L) has been synthesised via supramolecular assembly. The resulting dinuclear helical cylinder [Fe2L3]·4BF4 was investigated by variable temperature X-ray crystallography, ESI high resolution mass spectrometry, CHN analysis, FT-IR and UV-Vis spectroscopy. The nature of the spin transition was investigated by magnetic susceptibility measurements, and confirmed by VT-SCXRD and X-ray photoelectron spectroscopy. [Fe2L3]·4BF4 displays a complete spin transition with a gradual-abrupt character at T1/2 = 348 K and represents a new example of a dinuclear iron(II) complex exhibiting a spin transition at such a high temperature. Both VT-SCXRD and XPS measurements show excellent correlation with the magnetic susceptibility experiments, demonstrating the power of XPS to not just confirm, but also clearly follow the spin-state transition in Fe(II) SCO complexes.

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Publication details

The article was received on 07 Nov 2017, accepted on 11 Jan 2018 and first published on 11 Jan 2018


Article type: Paper
DOI: 10.1039/C7DT04190J
Citation: Dalton Trans., 2018, Accepted Manuscript
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    Direct Monitoring of Spin Transition at a High T1/2 Value in a Dinuclear Triple-Stranded Helicate Iron(II) Complex Through X-ray Pho-toelectron Spectroscopy

    L. Li, A. R. Craze, R. Akiyoshi, A. Tsukiashi, S. Hayami, O. Mustonen, M. Bhadbhade, S. Bhattacharyya, C. Marjo, Y. Wang, L. F. Lindoy, J. R. Aldrich-Wright and F. Li, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C7DT04190J

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