Multifaceted magnetization dynamics in the mononuclear complex [ReIVCl4(CN)2]2−

Xiaowen Feng; Jun-Liang Liu; Kasper S. Pedersen; Joscha Nehrkorn; Alexander Schnegg; Karsten Holldack; Jesper Bendix; Marc Sigrist; Hannu Mutka; Dumitru Samohvalov; David Aguilà; Ming-Liang Tong; Jeffrey R. Long; Rodolphe Clérac

doi:10.1039/C6CC05473K

Multifaceted magnetization dynamics in the mononuclear complex [Re^IVCl₄(CN)₂]²⁻†

Xiaowen Feng,^a Jun-Liang Liu,

^bcd Kasper S. Pedersen,^cde Joscha Nehrkorn,‡^f Alexander Schnegg,^f Karsten Holldack,^g Jesper Bendix,^h Marc Sigrist,^ij Hannu Mutka,ⁱ Dumitru Samohvalov,^cd David Aguilà,^cd Ming-Liang Tong,

^b Jeffrey R. Long*^akl and Rodolphe Clérac*^cd

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* Corresponding authors

^a Department of Chemistry, University of California Berkeley, California, USA
E-mail: jrlong@berkeley.edu

^b MOE Key Lab of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China

^c CNRS, CRPP, UPR 8641, F-33600 Pessac, France
E-mail: clerac@crpp-bordeaux.cnrs.fr

^d Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France

^e CNRS, ICMCB, UPR 9048, F-33600 Pessac, France

^f Berlin Joint EPR Laboratory, Institut für Nanospektroskopie, Helmholtz-Zentrum für Materialien und Energie, 12489 Berlin, Germany

^g Helmholtz-Zentrum für Materialien und Energie, Inst. f. Methoden und Instrumente der Forschung mit Synchrotronstrahlung, 12489 Berlin, Germany

^h Department of Chemistry, University of Copenhagen, DK-2100 Copenhagen, Denmark

ⁱ Institut Laue-Langevin, 38042 Grenoble Cedex 9, France

^j Institute of Chemistry, Academia Sinica, Nankang, 11529 Taipei, Taiwan, ROC

^k Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

^l Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, California 94720, USA

Abstract

The mononuclear complex (Bu₄N)₂[Re^IVCl₄(CN)₂]·2DMA (DMA = N,N-dimethylacetamide) displays intricate magnetization dynamics, implying Orbach, direct, and Raman-type relaxation processes. The Orbach relaxation process is characterized by an energy barrier of 39 K (27 cm⁻¹) that is discussed based on high-field electron paramagnetic resonance (EPR), inelastic neutron scattering and frequency-domain THz EPR investigations.

Chemical Communications

Multifaceted magnetization dynamics in the mononuclear complex [Re^IVCl₄(CN)₂]²⁻†

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Multifaceted magnetization dynamics in the mononuclear complex [Re^IVCl₄(CN)₂]²⁻

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