Etude en Spectrométrie de Masse. X—Fragmentation d'Ethanes Disubstitués par un Hétéroatome des Colonnes IV,V et VI,et par un Groupement Fonctionnel |
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Authors: | Jacques Greiner Emile Rouvier Aim Cambon |
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Institution: | Jacques Greiner,Emile Rouvier,Aimé Cambon |
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Abstract: | In this paper, the behaviour of ethers, sulfides, selenoethers, amines, germanes and stannanes, substituted on the β-C by a methoxycarbonyl, methyl ketone, or cyano group is compared and discussed. The compounds containing group VB or VIB element are quite stable, while those with a group IVB element fragment very easily. Fragmentation α to the heteroatom gives peaks for which the intensity increases with the size of the element:PhO]+<PhS]+<PhSe]+<Ph3Ge]+<Ph3Sn]+. Fragmentation at the β position gives very important peaks when the ionization potential is low or when the substituents inductive effect is strong (CN<CO2CH3<COCH3). |
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