1.3-DITHIOL-2-THION-4.5-DITHIOLAT Aus Schwefelkohlenstoff Und Alkalimetall

Steimecke, Günter; SIELER, H.-J.; Kirmse, R.; Hoyer, Eberhard

doi:10.1080/03086647808069922

Cited by 528 publications

(224 citation statements)

References 18 publications

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“…anion has been known for ³40 years as a member of the [M(dmit) 2 ] n¹ series. 212 Its uniqueness lies in the following two points. First, strong πd mixing is expected between the π-orbitals of the ligands and the 3d orbitals of Cu(II).…”

Section: ¹2mentioning

confidence: 99%

Development of a Control Method for Conduction and Magnetism in Molecular Crystals

Naito

2016

Bulletin of the Chemical Society of Japan

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This study concerns development of a non-destructive method to control conduction and magnetism of molecular solids such as single crystals of charge-transfer complexes. The method is named “optical doping”, where appropriate irradiation is utilized under ambient conditions. Owing to this feature, it can be applied to a wide range of substances while measuring the properties during the control. In addition, the method adds unique conduction and magnetic properties to common insulators. Unlike other doping methods, optical doping only affects the properties and/or structures of the irradiated part of a sample while leaving the rest of the sample unchanged. There are two patterns in the optical doping. Irreversible optical doping produces junction-structures on the single molecular crystals, which exhibit characteristic behavior of semiconductor devices such as diodes and varistors. Reversible optical doping produces “giant photoconductors” and “photomagnetic conductors” by realizing unprecedented metallic photoconduction. In the latter case, localized spins are also excited to produce a Kondo system, where carriers and localized spins interact with each other. Not only the control of conduction and magnetism, the optical doping has realized the observation of physical properties in molecular crystals hardly observed under any thermodynamic condition.

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Section: ¹2mentioning

confidence: 99%

Development of a Control Method for Conduction and Magnetism in Molecular Crystals

Naito

2016

Bulletin of the Chemical Society of Japan

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“…(ii) autoxidation of (NR4)2[Ni(dmit) 2] using methods first described by Steimecke et al (1979) for the synthesis of (NBu4)[Ni(dmit)2].…”

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confidence: 99%

Structures of tetramethylammonium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)niccolate(III) andtetra-n-propylammonium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)niccolate(III)

Diemen¹,

Groeneveld²,

Lind³

et al. 1988

Acta Crystallogr C

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“…Nos últimos 30 anos mais de 400 artigos foram publicados sobre o ligante 1,3-ditiol-2-tiona-4,5-ditiolato (dmit), cuja síntese ocorreu no final da década de 70 por Steimecke e colaboradores 1 , na Universidade de Leipzig, Alemanha 2 . Este ligante é obtido por meio de um processo de síntese que envolve atmosfera inerte e controle rígido da temperatura, a partir do dissulfeto de carbono, dimetilformamida e sódio metálico 1,3 .…”

Section: Introductionunclassified

“…Este ligante é obtido por meio de um processo de síntese que envolve atmosfera inerte e controle rígido da temperatura, a partir do dissulfeto de carbono, dimetilformamida e sódio metálico 1,3 . O dmit é estabilizado pela complexação com metais em diferentes estados de oxidação na forma de sal com ânion do tipo [M(dmit) 2 ] n-, formando compostos com estados de oxidação fracionados ou neutros.…”

Section: Introductionunclassified

Propriedades elétricas e magnéticas de novos compostos com o ânion condutor [Ni(dmit)2]- e radicais magnéticos nitronil nitróxido

Dias¹,

Stumpf²,

Sansiviero³

et al. 2007

Quím. Nova

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-is an anionic π-radical (dmit = 1,3-dithiol-2-thione-4,5-dithiolate) and + is 3-N-methylpyridinium α-nitronyl nitroxide, + is 4-N-methylpyridinium α-nitronyl nitroxide and + is 4-N-propylpyridinium α-nitronyl nitroxide. The temperature-dependent magnetic susceptibility of 1 revealed that an antiferromagnetic interaction operates between the 3-MeRad + radical cations with exchange coupling constants of J 1 = -1.72 cm -1 and antiferromagnetism assigned to the spin ladder chains of the Ni(dmit) 2 radical anions. Compound 1 exhibits semiconducting behavior and 3 presents capacitor behavior in the temperature range studied (4 -300 K).Keywords: semiconductor; magnetism; dmit. INTRODUÇÃONos últimos 30 anos mais de 400 artigos foram publicados sobre o ligante 1,3-ditiol-2-tiona-4,5-ditiolato (dmit), cuja síntese ocorreu no final da década de 70 por Steimecke e colaboradores 1 , na Universidade de Leipzig, Alemanha 2 . Este ligante é obtido por meio de um processo de síntese que envolve atmosfera inerte e controle rígido da temperatura, a partir do dissulfeto de carbono, dimetilformamida e sódio metálico 1,3 . O dmit é estabilizado pela complexação com metais em diferentes estados de oxidação na forma de sal com ânion do tipo [M(dmit) 2 ] n-, formando compostos com estados de oxidação fracionados ou neutros. Este tipo de ânion, rico em átomos de enxofre, conjugado à sua planaridade, permite a sobreposição intermolecular dos orbitais do átomo de enxofre, o que resulta em um sistema doador-aceptor π altamente deslocalizado de elevada condutividade. e as propriedade dos complexos neutros CpNi(dmit), CpNi(dsit) e CpNi(dmid) (dsit = 1,3-ditiol-2-tiona-4,5-diselenolato; dmid = 1,3-ditiol-2-one-4,5-ditiolato) 16 . Um dos mais recentes trabalhos publicados sobre o sistema dmit descreve fenômenos induzidos no comportamento elétrico sobre efeito de alta pressão hidrostática em compostos do tipo beta '-(cation) . Na curva χ p T vs T verificam-se

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1.3-DITHIOL-2-THION-4.5-DITHIOLAT Aus Schwefelkohlenstoff Und Alkalimetall

Cited by 528 publications

References 18 publications

Development of a Control Method for Conduction and Magnetism in Molecular Crystals

Development of a Control Method for Conduction and Magnetism in Molecular Crystals

Structures of tetramethylammonium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)niccolate(III) andtetra-n-propylammonium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)niccolate(III)

Propriedades elétricas e magnéticas de novos compostos com o ânion condutor [Ni(dmit)2]- e radicais magnéticos nitronil nitróxido

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