Three Properties in One Coordination Complex: Chirality, Spin Crossover, and Dielectric Switching

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Indexed by: Journal Article

Date of Publication: 2017-07-07

Journal: EUROPEAN JOURNAL OF INORGANIC CHEMISTRY

Included Journals: Scopus、SCIE

Volume: 2017

Issue: 25

Page Number: 3144-3149

ISSN: 1434-1948

Key Words: Iron; Multifunctional materials; Chirality; Spin crossover; Ligand effects

Abstract: In the search for multifunctional molecular materials, we designed an enantiopure pair of Fe-II complexes with chiral, chelating (R)/(S)-4,5-pinenepyridyl-2-pyrazine ligands exhibiting three inherent physical properties: chirality, spin crossover, and dielectric switching. The geometrical change resulted in coupling of the spin-crossover transition at 187 K to dielectric switching. Both compounds were found to display light-induced spin crossover that was thermally unstable above ca. 40 K. The coupling of two hysteretic properties, electric and magnetic, renders these compounds as potential switching devices.

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