698-41-9Relevant academic research and scientific papers
New cyclohexeno-fused tetrachalcogenofulvalenes and an electron correlated TCNQ salt
Sakurai, Naoki,Mori, Hatsumi,Tanaka, Shoji,Moriyama, Hiroshi
, p. 1191 - 1192 (1999)
New cyclohexeno-fused donors, CHET-TTF 1, CHESe-TTF 2, CHST 3 and CHEO-TTF 4, have been synthesized and the prepared 1 · TCNQ is electron correlated system with two-dimensional electronic structure by a tight-binding band calculation, where magnetic susceptibility is retained in Curie-like behavior down to 2 K.
Photochemical Unmasking of 1,3-Dithiol-2-ones: An Alternative Route to Heteroleptic Dithiolene Complexes from Low-Valent Molybdenum and Tungsten Precursors
Elvers, Benedict J.,Schulzke, Carola,Fischer, Christian
, p. 2796 - 2805 (2019/05/29)
Mono-dithiolene complexes [Mo(CO)2(dt)(dppe)] and [W(CO)2(dt)(dppe)] {dt = cyclohex-1-ene-1,2-dithiol; 5,6-dihydro-2H-pyran-3,4-dithiol and dppe= 1,2-bis(diphenylphosphino)ethane} were synthesized by a photochemical procedure. The typical basic de-protection of the dithiolene ligand precursor was replaced by a light-induced opening of the 1,2-dithiole-2-one moiety. Advantages of this targeted approach comprise higher yields, cleaner transformations, and the possibility to continuously and precisely monitor the reaction progress. The light induced pericyclic reaction of the protection group releases carbon monoxide with formation of a 1,2-dithione, which is capable of oxidizing the electron rich metal precursor due to its non-innocence character. This procedure works well with molybdenum(0) and tungsten(0) precursors and particularly well with dithiolene ligands bearing aliphatic backbones, which are typically and notoriously difficult to handle when applying strictly chemical procedures.
Organic transistors based on octamethylenetetrathiafulvalenes
Inoue, Jun-Ichi,Kanno, Masato,Ashizawa, Minoru,Seo, Chayeon,Tanioka, Akihiko,Mori, Takehiko
, p. 538 - 540 (2010/10/01)
Organic field-effect transistors (OFET) based on octamethylenetetrathiafulvalene (OMTTF) and the t-butyl derivative are investigated. The parent OMTTF shows poor transistor performance owing to the flat molecular arrangement, but the t-butyl substitution realizes standing molecular arrangement and high OFET performance. The tetracyanoquinodimethane (TCNQ) complex of OMTTF exhibits n-channel properties despite the strong donor ability of OMTTF.
Comparison of the Thermal, Photochemical, and Mass Spectrometric Fragmentation of Sulphur Heterocycles with cis-Dithioethene-Structure
Fanghaenel, E.,Poleschner, H.
, p. 1 - 13 (2007/10/02)
The mass spectrometric primary fragmentation of 3-methylthio-1,4,2-dithiazines 1, 1,4-dithiins 2, 2,3-dihydro-1,4-dithiin-2-ones 4, 1,3-dithiole-2-ones 5, 2-imino-1,3-dithioles 6 and 1,3-dithiole-2-thiones 7 is compared with their thermolytical and photochemical reaction.In the mass spectra an intense peak of the dithiete radical ion is observed, if in the compounds an energetically favourable neutral molecule is preformed: in 1 methyl rhodanide, in 3 ethene, in 4 ketene, in 5 carbon monoxide and in 6 hydrogen cyanide.The substances 1, 3-6 - with the restriction by 3 - yield photochemically the dithiete, too.The photolysis of dithiazines 1 is wave length dewpendent.Mass spectrometrically, thermally and photochemically the dithiins 2 form thiophenes.The dithiolethiones 7 decompose mass spectrometrically and thermally into carbon disulfide, sulfur and ethynes, but photochemically they form tetrathiafulvalenes.The fragmentation of the compounds 1-6 is analogous in mass spectrometry and photolysis; 2, 3, 5 and with reservation 1 show similar mass spectrometric, thermal and photochemical reactivity.Posible reasons for these analogies are discussed.The dithietes, generated by photolysis of the compounds 1, 4, 5 or 6 react with iron penta-, nickel tetra-, molybdenum hexa- and tungsten hexacarbonyl in the preparative scale to the corresponding dithiolene complexes.
Facile Syntheses of 1,3-Dithiol-2-ones and 1,3-Dithiole-2-thiones
Haley, Neil F.,Fichtner, Michael W.
, p. 2959 - 2962 (2007/10/02)
A facile ring closure of allyl xanthates or trithiocarbonates with iodine is discussed.The products of the reaction undergo basic dehydroiodination and acidic isomerization to give 1,3-dithiol-2-ones and -2-thiones in high yield.
