@article{03ef532d292446a59594adb30cc0238c,
title = "Radiolysis of tetrachloromethane",
abstract = "Electron spin resonance studies of tetrachloromethane after exposure to 60Co γ-rays at 77 K reveal the formation of .CCl3 and CCl4.+ radicals. On warming in the presence of spin-traps, or on irradiating fluid solutions, nitroxide radical adducts have been detected that are characteristic of .CCl3 and chlorine atom adducts. In the light of this evidence and that of other investigators a mechanism for the radiolysis of tetrachloromethane is postulated. In the presence of oxygen, .CCl3 radicals are converted into Cl3COO. radicals. The use of spin-traps to detect these radicals is described and evaluated.",
author = "Symons, \{Martyn C.R.\} and Emanuele Albano and Slater, \{Trevor F.\} and Aldo Tomasi",
note = "Funding Information: 0.6 G to one chlorine and a clear coupling of ca. 5.7 G to 13C [fig. 2(e)]. The radical is almost certainly C113CONO(CMe,), but we hesitate to propose a route for its formation. PHOTOLYSES In order to check the e.s.r. spectra of some of these spin-trap adducts, we also studied the photolysis of tetrachloromethane in the presence of PBN and MNP. The major species formed were CCl, adducts, but considerable yields of acyl nitroxides were also obtained. We thank the National Foundation for Cancer Research, the Bossolasco Foun- dation and the Wellcome Trust for financial assistance. We are also indebted to Dr K. A. K. Lott for providing e.s.r. facilities and for helpful advice.2214 RADIOLYSIS OF TETRACHLOROMETHANE S. P. Mishra and M. C. R. Symons, Radiat. Phys. Chem., 1975, 7, 617. C. Hesse, N. Leray and J. Roncin, Mol. Phys., 1971, 22, 137. 0. Brede, J. Bos and R. Mehnert, Ber. Bunsenges. Phys. Chem., 1980,84, 63. R. E. Buhler, Radiat. Res. Rev., 1972, 4, 233; Helv. Chim. Acta, 1968, 51, 1558. A. Tomasi, E. Albano, K. A. K. Lott and T. F. Slater, FEBS Lett., 1980, 122, 303. J. L. Poyer, P. B. McCay, E. K. Lai, E. G. Janzen and E. R. Davis, Biochem. Biophys. Res. Commun., 1980, 94, 1 154; J. L. Poyer, R. A. Floyd, P. B. McCay, E. G. Janzen and E. R. Davis, Biochim. Biophys. Acta, 1978, 539, 402. {\textquoteright} B. Lesigne, L. Gilles and R. J. Woods, Can. J. Chem., 1974, 52, 1135. * R. 0. Recknagel, Pharmacol. Rev., 1967, 19, 145. @ M. U. Dianzani, in Biochemical Mechanisms of Liver Injury, ed. T. R. Slater (Academic Press, London, 1978), pp. 45-95. M. C. R. Symons, Chemical and Biochemical Aspects of Electron Spin Resonance (Van Nostrand Reinhold, London, 1978). R. S. Eachus, P. R. Edwards, S. Subramanian and M. C. R. Symons, J. Chem. SOC. A , 1968, 1704. lo T. F. Slater, Nature (London), 1966, 209, 36. l4 I. H. Leaver, G. C. Ramsey and E. Suzuki, Aust. J. Chem., 1969, 22, 1891. 1Q J. Pfab. Tetrahedron Lett., 1978, 843. l5 A. Mackor, Th. A. J. W. Wajer and Th. J. de Boer, Tetrahedron Lett., 1967, 385. l6 J. H. Sharp and M. C. R. Symons, Nature (London), 1969, 224, 1297. M. V. Merritt and R. A. Johnson, J. Am. Chem. Soc., 1977,99, 3713. (PAPER 1 / 1492)",
year = "1982",
doi = "10.1039/F19827802205",
language = "English",
volume = "78",
pages = "2205--2214",
journal = "Journal of the Chemical Society, Faraday Transactions I",
issn = "0300-9599",
publisher = "Faraday Division of the Chemical Society",
number = "7",
}