Journal ArticleDOI
Bistability and the Phase Transition in 1,3,2-Dithiazolo[4,5-b]pyrazin-2-yl
Jaclyn L. Brusso,Owen P. Clements,Robert C. Haddon,Mikhail E. Itkis,Alicea A. Leitch,Richard T. Oakley,Robert W. Reed,John F. Richardson +7 more
TLDR
The structural interconversion is suggested to proceed via the cooperative breaking and making of intermolecular S- - -N interactions and an inversion symmetry-preserving "domino cascade" of the pi-stacked rings.Abstract:
The molecular radical 1,3,2-dithiazolo[4,5-b]pyrazin-2-yl (PDTA) exhibits magnetic bistability just above room temperature, undergoing a well-defined hysteretic phase change with TC↓ = 297(1) K and TC↑ = 343(1) K. The crystal structures of the two phases of PDTA have been determined by single-crystal X-ray diffraction at 323(2) K. LT-PDTA consists of diamagnetic (S = 0) nearly superimposed π-dimer stacks, while that of HT-PDTA comprises slipped stacks of π-radicals (S = 1/2). The structural interconversion is suggested to proceed via the cooperative breaking and making of intermolecular S- - -N interactions and an inversion symmetry-preserving “domino cascade” of the π-stacked rings.read more
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Stretching bonds in main group element compounds—Borderlines between biradicals and closed-shell species
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Thiazyl radicals: old materials for new molecular devices
TL;DR: In this paper, a review describes recent advances in the development of thiazyl radicals, particularly dithiadiazolyl (RCNSSN), as molecule-based materials.
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