Observation and deconvolution of a unique EPR signal from two cocrystallized spin triangles | Zendy

Logesh Mathivathanan | Zendy; Yiannis Sanakis | Zendy; Raphael G. Raptis | Zendy; Philippe Turek | Zendy; A.K. Boudalis | Zendy

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Observation and deconvolution of a unique EPR signal from two cocrystallized spin triangles

Author(s) -

Logesh Mathivathanan,

Yiannis Sanakis,

Raphael G. Raptis,

Philippe Turek,

A.K. Boudalis

Publication year - 2021

Publication title -

physical chemistry chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.053

H-Index - 239

eISSN - 1463-9084

pISSN - 1463-9076

DOI - 10.1039/d1cp01965a

Subject(s) - electron paramagnetic resonance , isosceles triangle , hyperfine structure , isotropy , symmetry (geometry) , spin (aerodynamics) , physics , nuclear magnetic resonance , spectral line , condensed matter physics , atomic physics , geometry , mathematics , optics , quantum mechanics , thermodynamics

A 16-line pattern has been theoretically predicted, but hitherto not reported, for the Electron Paramagnetic Resonance (EPR) spectrum of antiferromagnetically coupled CuII triangles experiencing isotropic exchange of isosceles magnetic symmetry. Now, the crystallization of such a triangular species and its X-ray structure determination in a polar space group, R3 (No. 146), has enabled its single crystal EPR study. Its detailed magnetic susceptibility, and X- and Q-band, powder and single crystal EPR spectroscopic study reveals the effect of molecular structure and of Dzyaloshinskii-Moriya interactions (DMI) on the g‖, g⊥ and A‖ parameters of the spectrum; DMI is considered for the first time in such a context. Moreover, careful analysis of the spectrum allows the deconvolution of two slightly different cocrystallized magnetic species.

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