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Coexistence of metamagnetism and slow relaxation of magnetization in ammonium hexafluoridorhenate.

ABSTRACT: The (NH₄)₂[ReF₆] (1) salt was studied by X-ray diffraction, Raman spectroscopy, theoretical calculations, and magnetic measurements. 1 crystallizes in the trigonal space group P3̄m1 (Re-F = 1.958(5) Å). In the Raman spectrum of 1, splitting of the observed peaks was observed and correlated to the valence frequencies of vibration of the [ReF₆]^2- anion. The study of the magnetic properties of 1, through DC and AC magnetic susceptibility measurements, reveals the coexistence of metamagnetism and slow relaxation of magnetization at low temperature, which is unusual in the molecular systems based on the paramagnetic 5d metal ions reported so far.

SUBMITTER: Louis-Jean J

PROVIDER: S-EPMC8694846 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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Coexistence of metamagnetism and slow relaxation of magnetization in ammonium hexafluoridorhenate.

Louis-Jean James J Balasekaran Samundeeswari M SM Lawler Keith V KV Sanchis-Perucho Adrián A Martínez-Lillo José J Smith Dean D Forster Paul M PM Salamat Ashkan A Poineau Frederic F

RSC advances 20210203 11

The (NH4)2[ReF6] (1) salt was studied by X-ray diffraction, Raman spectroscopy, theoretical calculations, and magnetic measurements. 1 crystallizes in the trigonal space group P3̄m1 (Re-F = 1.958(5) Å). In the Raman spectrum of 1, splitting of the observed peaks was observed and correlated to the valence frequencies of vibration of the [ReF6]2- anion. The study of the magnetic properties of 1, through DC and AC magnetic suscept ...[more]

PMID: 35423149

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