β Scribed by J. Casado; J. Peleteiro; M.A. Rios
No coin nor oath required. For personal study only.
SingIet electronic transitions in 1 .?-naphthoquinone and seven of its derwativcs substituted in the qumoid s:. stem have been theoretically studied through semi-empirical SCF MO CI calculations, in the frame of si and all Mence electron (AVE) approximations. Dipole electrostatic contributions to tie shifts originating from rhe sohent ha\e been calcuhted and rhe iocal nature of the most significant transitIons has been analyzed. The results agree snrisfactorily with experiment, showing rhe effects of the substituents, which in some cases are underestimated
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Disulfides of 1,4-naphthoquinone were synthesized, and different methods of their synthesis were investigated. High yields and purity of disulfides were obtained from the oxidation of thiol derivatives. The latter were prepared in high yields and purity from isothiuronic salts. The obtained disulfid
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