QI, Xinghui; GUIONNEAU, Philippe; LAFON, Enzo; PEROT, Solène; KAUFFMANN, Brice; MATHONIÈRE, Corine

doi:10.3390/magnetochemistry

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QI, Xinghui
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

GUIONNEAU, Philippe
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

LAFON, Enzo
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Magnetochemistry. 2021-07-06, vol. 7, n° 7, p. 97 (13 p.)

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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< Réduire

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coordination compounds

octacyanometalates

photomagnetism

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

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