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Interaction of acenannulated metallotetraazaporphyrins with the Lewis acid aluminum bromide

✍ Scribed by Wolfgang Freyer; L.Q. Minh

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
199 KB
Volume
01
Category
Article
ISSN
1088-4246

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✦ Synopsis

Interaction of metal complexes of linearly benzo-annulated tetraazaporphyrins such as tetra-tert-butyltetrabenzoporphyrazine, tetra-tert-butyltetranaphthoporphyrazine, and octaphenyltetraanthraporphyrazine, with the Lewis acid AlBr 3 in nitrobenzene and ethylbromide has been studied by absorption spectroscopy. The interaction is characterized by stepwise formation of several protonated complexes with the superacid H + [AlBr 4 ] -. Mono-, di-, tri-and tetraprotonated species can be formed. The absorption maxima are shifted up to 1300 nm depending on annulation, metal ion and concentration of the Lewis acid.

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