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Solution phase 1H and 13C-NMR studies of some 1,4,8,11,15,18,22,25-octa-alkylphthalocyanines

✍ Scribed by Michael J. Cook; Steven J. Cracknell; Geoffrey R. Moore; Michael J. Osborne; David J. Williamson

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 520 KB
Volume: 29
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260291014

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✦ Synopsis

Abstract

Solution state ^1^H NMR and ^13^C NMR spectral data are reported for 1,4,8,11,15,18,22,25‐octahexylphthalocyanine, its zinc metallated analogue, and 1,4,8,11,15,18,22,25‐octanonylphthalocyanine. Full ^1^H and ^13^C NMR signal assignments for these compounds have been made using one and two dimensional techniques supported by T~1~ measurements. ^13^C NMR spectra of the two metal‐free derivatives show only three signals in the aromatic region at 100 MHz but the expected four resonances at 22.5 MHz. The apparent absence of one of these at 100 MHz is ascribed to a fast exchange process, originating from NH ⃛N⇌N ⃛HN tautomerism.

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