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- Title
Syntheses and X-Ray Structures for Model Compounds of a Pyrimidinediyl-Based Rigid-Rod Aromatic Polyamide.
- Authors
Oertli, Alfred G.; Meyer, Werner R.; Suter, Ulrich W.; Joho, Felix B.; Gramlich, Volker; Petter, Walter
- Abstract
A variety of model compounds for the pyrimidinediyl-based rigid-rod polyamide poly[imino-(pyrimidine-2,5-diyl)-imino-tetraphthaloyl] (PPYMT) was prepared, in order to compare their conformations to several model compounds of the related, fully aromatic polymer poly( p-phenyleneterephthalamide) (PPTA). In particular, the structures of N-(2-pyrimidyl)benzamide (PYMB) and its complexed form bis[( N-pyrimidin-2-yl)benzamide]nickel(II) dichloride (NiPYMB) were determined by X-ray diffraction. The molecular packing in these crystals provides us with a model for the possible 'cross-linking' of PPYMT fibers. The structures of the trimer model compounds N, N′ -bis(2-pyrimidyl)terephthalamide (PYTA) and N, N′ -bis(benzoyl)-2,5-diaminopyrimidine (BDAP) yield information about the conformation of PPYMT chains and are compared to analogous model compounds of PPTA.
- Publication
Helvetica Chimica Acta, 1992, Vol 75, Issue 1, p184
- ISSN
0018-019X
- Publication type
Article
- DOI
10.1002/hlca.19920750116