STRUCTURE OF THE SOLUBLE LEWIS-ACID POLY(P-PHENYLENEBENZOBISTHIAZOLE)AND POLY(P-PHENYLENEBENZOBISOXAZOLE) COMPLEXES

Citation
Jw. Connolly et al., STRUCTURE OF THE SOLUBLE LEWIS-ACID POLY(P-PHENYLENEBENZOBISTHIAZOLE)AND POLY(P-PHENYLENEBENZOBISOXAZOLE) COMPLEXES, Chemistry of materials, 8(1), 1996, pp. 54-59
Citations number
23
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
ISSN journal
08974756
Volume
8
Issue
1
Year of publication
1996
Pages
54 - 59
Database
ISI
SICI code
0897-4756(1996)8:1<54:SOTSLP>2.0.ZU;2-1
Abstract
The published postulated structures of the species present in aluminum chloride containing nitromethane solutions of PBZT and PBO have been reinvestigated. Consideration of previously reported and new Al-27 NMR spectra indicate that the predominant species in solution are AlCl4- and a cationic species containing aluminum bound to the nitrogen atoms in the polymer repeat unit, which are formed by reaction of the neutr al aluminum chloride complexed polymer. Calculational evidence is also presented to support a 2:1 ratio of aluminum chloride to polymer repe at unit in the neutral complex.