LIU, Jun-Liang; PEDERSEN, Kasper; GREER, Samuel; OYARZABAL, Itziar; MONDAL, Abhishake; HILL, Stephen; WILHELM, Fabrice; ROGALEV, Andrei; TRESSAUD, Alain; DURAND, Etienne; LONG, Jeffrey; CLÉRAC, Rodolphe

doi:10.1002/anie.201914934

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LIU, Jun-Liang
Centre de Recherche Paul Pascal [CRPP]

PEDERSEN, Kasper
Danmarks Tekniske Universitet = Technical University of Denmark [DTU]

GREER, Samuel
National High Magnetic Field Laboratory [NHMFL]

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Angewandte Chemie International Edition. 2020-06-22, vol. 59, n° 26, p. 10306-10310

Wiley-VCH Verlag

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Silicon-mediated fluoride abstraction is demonstrated as a means of generating the first fluorido-cyanido transition metal complexes. This new synthetic approach is exemplified by the synthesis and characterization of the heteroleptic complexes, trans-[M IV F 4 (CN) 2 ] 2À (M = Re, Os), obtained from their homoleptic [M IV F 6 ] 2À parents. As shown by combined high-field electron paramagnetic resonance spectroscopy and magnetization measurements, the partial substitution of fluoride by cyanide ligands leads to a marked increase in the magnetic anisotropy of trans-[ReF 4 (CN) 2 ] 2À as compared to [ReF 6 ] 2À , reflecting the severe departure from an ideal octahedral (O h point group) ligand field. This methodology paves the way toward the realization of new heteroleptic transition metal complexes that may be used as highly anisotropic building-blocks for the design of high-performance molecule-based magnetic materials.< Réduire

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Access to Heteroleptic Fluorido‐Cyanido Complexes with a Large Magnetic Anisotropy by Fluoride Abstraction

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