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Spin state solvomorphism in a series of rare S = 1 manganese(iii) complexes

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Abstract

Structural, magnetic and spectroscopic data of four complex salts, [Mn(napsal2323)]NTf2, 1,[Mn(napsal2323)]ClO4, 2, [Mn(napsal2323)]BF4, 3 and [Mn(napsal2323)]NO3, 4, of the [Mn(napsal2323)]+ complex cation indicate that the Mn3+ ion is stabilized in the rare S = 1 spin triplet form in this ligand sphere. Zero-field splitting values of D = +19.6 cm−1 and |E| = 2.02 cm−1 for complex 1 were obtained by High Field Electron Paramagnetic Resonance (HFEPR) measurements conducted over a range of frequencies. Structural and magnetic data also indicate that co-crystallization of complexes 2 and 3 with 0.5 equivalents of ethanol yields the high spin S = 2 forms of the perchlorate and tetrafluoroborate solvates [Mn(napsal2323)]ClO4·0.5(C2H5OH), 2·0.5EtOH and [Mn(napsal2323)]BF4·0.5(C2H5OH), 3·0.5EtOH.

Graphical abstract: Spin state solvomorphism in a series of rare S = 1 manganese(iii) complexes

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Publication details

The article was received on 11 Jun 2019, accepted on 16 Jul 2019 and first published on 17 Jul 2019


Article type: Paper
DOI: 10.1039/C9DT02476J
Dalton Trans., 2019, Advance Article

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    Spin state solvomorphism in a series of rare S = 1 manganese(III) complexes

    A. Barker, C. T. Kelly, I. A. Kühne, S. Hill, J. Krzystek, P. Wix, K. Esien, S. Felton, H. Müller-Bunz and G. G. Morgan, Dalton Trans., 2019, Advance Article , DOI: 10.1039/C9DT02476J

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