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The crystalline structure of isotactic polyallylcyclopentane

✍ Scribed by V. Petraccone; B. Pirozzi; P. Corradini

Publisher: Elsevier Science
Year: 1972
Tongue: English
Weight: 419 KB
Volume: 8
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(72)90087-0

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✦ Synopsis

The crystalline structure of isotactic polyallylcyclopentane has been examined. Since there are 3"42 ~ 0"01 monomeric units per pitch, the helical symmetry is very near to s(24/7)1 and the helices are packed in a tetragonal unit cell (a = 20" 30 4-0" 05 ,~, c = 47.40 --0" 12 A). The mode of packing and the disorder in the lattice are discussed. An explanation of an "anomalous" meridional reflection is proposed; its possible application to other polymers is also proposed. * The symbols h, n, t have been chosen in order to conform to the tentative suggestions of the I.U.P.A.C.

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