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New photomagnetic ionic salts based on [MoIV(CN)8]4− and [WIV(CN)8]4− anions

Abstract : Three new ionic salts containing [M(CN)8]4− (M = MoIV and WIV) were prepared using large complex cations based on a non-conventional motif built with the tris(2-aminoethyl)amine (noted hereafter tren) ligand, [{M’(tren)}3(μ-tren)]6+ (M’ = CuII and ZnII). The crystal structures of the three compounds show that the atomic arrangement is formed by relatively isolated anionic and cationic entities. The three compounds were irradiated with a blue light at low temperature, and show a significant photomagnetic effect. The remarkable properties of these compounds are (i) the long-lived photomagnetic metastable states for the [Mo(CN)8]4−-based compounds well above 200 K and (ii) the rare efficient photomagnetic properties of the [W(CN)8]4−-based compound. These photomagnetic properties are compared with the singlet-triplet conversion recently reported for the K4[Mo(CN)8]·2H2O compound
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Contributor : Stéphane Toulin Connect in order to contact the contributor
Submitted on : Monday, July 12, 2021 - 2:16:21 PM
Last modification on : Sunday, June 26, 2022 - 3:10:53 AM
Long-term archiving on: : Wednesday, October 13, 2021 - 7:05:11 PM


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Xinghui Qi, Philippe Guionneau, Enzo Lafon, Solène Perot, Brice Kauffmann, et al.. New photomagnetic ionic salts based on [MoIV(CN)8]4− and [WIV(CN)8]4− anions. Magnetochemistry, 2021, 7 (7), 97 (13 p.). ⟨10.3390/magnetochemistry⟩. ⟨hal-03284223⟩



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