The thermal fragmentation of 1,3,4-diathiazol-2-ones
作者:Derek J. Greig、R.Michael Paton、John G. Rankin、John F. Ross、John Crosby
DOI:10.1016/0040-4039(82)80155-x
日期:1982.1
Synthesis and Properties of Tetrathiadiazafulvalenes [RCNS2C:CS2NCR] (R = H, Me, Ph)
作者:Richard T. Oakley、John F. Richardson、Rupert E. v. H. Spence
DOI:10.1021/jo00090a016
日期:1994.6
Reduction of 5-(methylthio)-1,4,2-dithiazolium (3, R = H, Me, Ph) salts with zinc powder yields the corresponding diazahexathioorthooxalate derivatives (RCNS(2))(MeS)CC(SMe)(S(2)NCR) (4, R = H, Me, Ph). Thermolysis of these materials in the presence of catalytic quantities of iodine affords the tetrathiadiazafulvalenes [RCNS(2)C=CS(2)NCR] (2, R = H, Me, Ph) in good yield. Separation of the cis and trans isomers can be achieved with relative ease for the R = Me and Ph derivatives, but co-crystallization occurs for the two isomers of the R = H compound. Tetrathiadiazafulvalenes are poorer electron donors than TTF; cyclic voltammetry nonetheless reveals two reversible oxidation processes. The ESR spectrum of the radical cation trans-2(+.) (R = Ph) consists of a quintet with a(N) = 0.08 mT, g = 2.0071.
GREIG, D. J.;PATON, R. M.;RANKIN, J. ROSS, J. F.;CROSBY, J., TETRAHEDRON LETT., 1982, 23, N 51, 5453-5354
作者:GREIG, D. J.、PATON, R. M.、RANKIN, J. ROSS, J. F.、CROSBY, J.
DOI:——
日期:——
Wai, Kwok-Fai; Sammes, Michael P., Journal of the Chemical Society. Perkin transactions I, 1992, # 16, p. 2065 - 2070