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1975 (1)
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 Title    Die Analytische Bedeutung des Ortho-Effektes in der Massenspektrometrie: Untersuchungen von Benzoe-und Thiobenzoesäure-Derivaten Spectroscopic Investigations, I X 1 The A nalytical Importance of the Ortho Effect in Mass Spectrom etry: Investigations of Benzoic and Thiobenzoic Acid Derivatives  
 Abstract    J ü r g e n M a r t e n s 2, K l a u s P r a e f c k e u n d H e l m u t S c h w a r z The mass-spectrometric investigation of esters and thiolesters of benzoic, thiobenzoic, salicylic and thiosalicylic esters shows that an analytical distinction with aid of the ortho effect is only possible under certain conditions between 1,2 -disubstituted aromatic compounds and the other constitutional isomers. Absent or small intensive signals of rearrangement-ions do not exclude such a constitution. The apparent anomalous behaviour of the S-methyl, S-tolyl and O-tolyl esters is rationalized by energy considerations. The influence of the enthalpy of formation of the neutral particles on the product distribution (a-cleavage/ortho effect) is discussed. 
  Reference    (Z. Naturforsch. 30b, 259—262 [1975]; eingegangen am 22. Oktober 1974) 
  Published    1975 
  Keywords    Esters, Thiolesters, Ortho-Effect 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0259.pdf 
 Identifier    ZNB-1975-30b-0259 
 Volume    30