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
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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
Citations
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Observation of an unusual hysteretic magnetic transition in a heteroleptic nickel-bis-1,2-dithiolene compound
TL;DR: A heteroleptic nickel-bis-1,2-dithiolene ion-pair complex, [BzQl][Ni(dmit)(mnt)], was synthesized and characterized structurally, which exhibited novel magnetic bistability as mentioned in this paper.
Journal ArticleDOI
Reorganization of intermolecular interactions in the polymorphic phase transition of a prototypical dithiazolyl-based bistable material
Tommaso Francese,Fernando Mota,Mercè Deumal,Juan J. Novoa,Remco W. A. Havenith,Ria Broer,Jordi Ribas-Arino +6 more
TL;DR: The spin transitions undergone by several molecular crystals of Dithiazolyl radicals make this type of radical promising candidates for future sensors and memory devices as mentioned in this paper, and they have been shown to be a promising candidate for future memory devices.
Journal ArticleDOI
A short and efficient route from tetrahydrothiophene to thieno[2,3-d][1,3,2]dithiazolium salts
Lidia S. Konstantinova,Vadim V. Popov,Andrey V. Lalov,Ljudmila V. Mikhalchenko,Vadim P. Gultyai,Oleg A. Rakitin +5 more
TL;DR: In this article, a synthesis of thieno[2,3d][1,3,2]dithiazolium salts from commercial tetrahydrothiophene has been developed.
Journal ArticleDOI
An investigation of halogen bonding as a structure-directing interaction in dithiadiazolyl radicals
Mitchell A. Nascimento,Elodie Heyer,Robert J. Less,Christopher M. Pask,Ana B. Arauzo,Javier Campo,Jeremy M. Rawson,Jeremy M. Rawson +7 more
TL;DR: In this paper, the preparation and characterization of the halo-functionalized dithiadiazolyl radicals p-XC6F4CNSSN (X = Br (1) or I (2)) are described.
Journal ArticleDOI
Identification of [1,3]dithiolo[4,5-d]dithiazolyl radicals by in situ EPR spectroscopy and cyclic voltammetry
Vadim V. Popov,Stanislav A. Amelichev,Ivan S. Bushmarinov,Lidia S. Konstantinova,Konstantin A. Lyssenko,L. V. Mikhal’chenko,Valentin V. Novikov,Vadim P. Gultyai,Oleg A. Rakitin +8 more
TL;DR: In this article, the synthesis of [1,3]dithiolo[4,5-d]-dithiazolium salts from readily available zinc chelate has been developed.
References
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Journal ArticleDOI
Magneto-Opto-Electronic Bistability in a Phenalenyl-Based Neutral Radical
TL;DR: A new organic molecular conductor, based on a spiro-biphenalenyl neutral radical, simultaneously exhibits bistability in three physical channels: electrical, optical, and magnetic.
Journal ArticleDOI
Room-Temperature Magnetic Bistability in Organic Radical Crystals
TL;DR: A large first-order magnetic phase transition in an organic radical, 1,3,5-trithia-2,4,6-triazapentalenyl, is described and may have applications in thermal sensors, switching units, and information storage media based on organic radical crystals.
Journal ArticleDOI
Bistabilities in 1,3,2-dithiazolyl radicals.
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
TL;DR: A mechanism for the interconversion of the two phases of PDTA and related structures is proposed in which hysteretic behavior arises from cooperative effects associated with the breaking and making of a lattice-wide network of intermolecular S - - -N' and/or S- - -S' interactions.
Journal ArticleDOI
Redox, magnetic, and structural properties of 1,3,2-dithiazolyl radicals. a case study on the ternary heterocycle s3n5c4
a T. M. Barclay,A. W. Cordes,b N. A. George,c R. C. Haddon,c M. E. Itkis,d M. S. Mashuta,b G. W. Patenaude,b R. W. Reed,d and J. F. Richardson +8 more
TL;DR: In this article, the characterization of the heterocyclic radical 1,2,5-thiadiazolo [3,4-b]-1,3,2-dithiazolo[3, 4-b]pyrazin-2-yl (TDP-DTA) is described.
Journal ArticleDOI
Synthesis, crystal structures, electronic structure and magnetic behaviour of the trithiatriazapentalenyl radical, C2S3N3
Gordon D. McManus,Jeremy M. Rawson,Neil Feeder,Joost van Duijn,Eric J. L. McInnes,Juan J. Novoa,Ramón Burriel,Fernando Palacio,Patricia B. Oliete +8 more
TL;DR: In this article, a novel synthesis of the title compound, C2S3N3======677(1) is reported, which is based on DFT calculations and X-ray diffraction in the region 300-225k and reveals a regular π-stacked structure.