Add time:08/20/2019         Source:sciencedirect.com

We have studied the photolysis and the fragmentation in the mass spectrometer of bis(2-cyanoethyl)mercury, bis(2-cyanoethyl) selenide, bis(2-cyanoethyl) sulphide, dibutylbis(2-cyanoethyl)stannane, and bis[2-(methoxycarbonyl)ethyl] selenide. The mercury compound gave a high yield of adiponitrile on photolysis and in the mass spectrometer it gave the fragmentation pattern of adiponitrile, including the molecular ion, as part of the total fragmentation pattern. A low yield of bialkyl was also formed on photolysis of the bis[2-(methoxycarbonyl)ethyl] selenide but no peaks corresponding to biakyl were observed in the mass spectrum. None of the other compounds yielded alkyl dimer.A preliminary discussion of the results in terms of orbital symmetry is presented.

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