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Mass spectrometric investigation of some macrocyclic and macroacyclic compartmental schiff bases

✍ Scribed by P. Guerriero; S. Tamburini; P. A. Vigato; R. Seraglia; P. Traldi

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
539 KB
Volume
27
Category
Article
ISSN
1076-5174

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✦ Synopsis

The mass spectrometric behaviour of four macroacyclic and five macrocyclic Schiff bases using two ionization methods (electron impact and fast atom bombardment) was studied in detail with the aid of mass-analysed ion kinetic energy (MIKE) spectrometry. It was possible to propose a common electron impact-induced decomposition pattern for the acyclic compounds, whereas for the cyclic compounds, analysed by fast atom bombardment, peculiar fragmentation routes occurred, which were strongly dependent on the macrocyclic structure and on the different side-chains.

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## Abstract The condensation of bis(__o__‐formylphenyl) selenide with 1,2‐diaminoethane or 1,3‐diaminopropane yielded the new macrocyclic ligands 1 and 2 in very good yields. Crystals of 1 are monoclinic, space group __P__2~1~/__c__ with __a__ = 10.0648(10) Γ…, __b__ = 37.390(4) Γ…, __c__ = 8.0073(11