Evidence of dynamical effects and critical field in a cobalt spin crossover complex

Thilini K. Ekanayaka; Ping Wang; Saeed Yazdani; Jared Paul Phillips; Esha Mishra; Ashley S. Dale; Alpha T. N’Diaye; Christoph Klewe; Padraic Shafer; John Freeland; Robert Streubel; James Paris Wampler; Vivien Zapf; Ruihua Cheng; Michael Shatruk; Peter A. Dowben

doi:10.1039/D1CC05309D

Evidence of dynamical effects and critical field in a cobalt spin crossover complex†

Thilini K. Ekanayaka,

^a Ping Wang,

^b Saeed Yazdani,^c Jared Paul Phillips,^c Esha Mishra,^a Ashley S. Dale,^c Alpha T. N’Diaye,

^d Christoph Klewe,^d Padraic Shafer,^d John Freeland,^e Robert Streubel,

^af James Paris Wampler,^g Vivien Zapf,

^g Ruihua Cheng,*^c Michael Shatruk

^b and Peter A. Dowben

*^a

Author affiliations

* Corresponding authors

^a Department of Physics and Astronomy, Jorgensen Hall, University of Nebraska, Lincoln, NE 68588-0299, USA
E-mail: pdowben1@unl.edu

^b Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306, USA

^c Department of Physics, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202, USA

^d Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

^e Argonne National Laboratory, Advanced Photon Source, Bldg. 431/E003, 9700 South Cass Ave., Argonne, IL 60439, USA

^f Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, NE 68588, USA

^g National High Magnetic Field Lab, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545, USA

Abstract

The [Co(SQ)₂(4-CN-py)₂] complex exhibits dynamical effects over a wide range of temperature. The orbital moment, determined by X-ray magnetic circular dichroism (XMCD) with decreasing applied magnetic field, indicates a nonzero critical field for net alignment of magnetic moments, an effect not seen with the spin moment of [Co(SQ)₂(4-CN-py)₂].

Chemical Communications

Evidence of dynamical effects and critical field in a cobalt spin crossover complex†

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Evidence of dynamical effects and critical field in a cobalt spin crossover complex

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