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H–D Exchange in some macrocyclic complexes of nickel(II) under electron impact

✍ Scribed by Sergiu P. Palii; Konstantin M. Indrichan; Nikolai V. Gerbeleu; Vladinir B. Arion; Dmitrii V. Zagorevskii; Yurii S. Nekrasov

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
184 KB
Volume
25
Category
Article
ISSN
1076-5174

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✦ Synopsis

The electron impact mass spectra of coordination compounds of nickel(I1) containing 14membered hexaaza macrocyclic ligands composed of S-substituted isothiosemicarbazide and Fdiketone units with cis and trans arrangement of SR groups were studied. The molecular ions exhibited the most intense peaks in all cases. The loss of peripheral groups is a common feature of the decomposition of the molecular ions for the compounds studied.

Exchange between the hydrogen atoms of the alkylthio groups and the hydrogen at y-carbon atoms of the pdiketonate fragments was observed in the mass spectra of compounds with trans-SR groups. The molecular ions of the complexes with cis-SR groups selectively eliminated the radical R'.

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