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Structural study of Mn(III)-tetraarylporphyrin complexes by fast atom bombardment mass spectrometry

✍ Scribed by F. M. Rubino; P. Mascaro; S. Banfi; S. Quici

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
467 KB
Volume
26
Category
Article
ISSN
1076-5174

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✦ Synopsis

Abstract

A series of 27 Mn(III)‐tetraarylporphyrins bearing heterogeneous substituents on the phenyl rings at the meso positions were subjected to positive ion fast atom bombardment mass spectrometry The source spectra yielded the molecular ion and a few peaks confirmative of the chemical structure. Major processes were hydrogenolytic loss of the aryl rings or of their substituents. Molecules carrying a side‐chain underwent loss of the chain either as a solution process (amide linkage) or as a gas‐phase process (phenolic ether linkage). Collisionally activated dissociation mass‐analysed ion kinetic energy spectroscopy allowed discrimination between the two types of fragmentation processes and some other previously unreported gas‐phase reaction channels to be recognized.

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