Structure of poly-m-phenyleneisophthalamide

Autor:	L.G. Kazaryan, Yu.A. Tolkachev, V.A. Vasil'ev, M.A. Dakhis, D.Ya. Tsvankin
Rok vydání:	1975
Předmět:	chemistry.chemical_compound Crystallography chemistry Group (periodic table) General Engineering Infrared spectroscopy Triclinic crystal system Dichroism Ring (chemistry) Benzene Phase density Unit (ring theory)
Zdroj:	Polymer Science U.S.S.R.. 17:1797-1807
ISSN:	0032-3950
DOI:	10.1016/0032-3950(75)90187-2
Popis:	The unit cell of crystalline poly-m-phenyleneisophthalamide has been analysed. The cell is a triclinic, three dimensional PI group. The cell parameters are: a=b =5·36 A, c=11·3 A, α=β=112°40′, γ=87°35′. The crystalline phase density is 1·465 g/cm3. The planes of CONH groups make angles of 45 and 155° with benzene ring planes. H bonds are positioned alternately in the 010 and 100 planes. Dichroism values calculated for the vibrations of CO and CN are in good agreement with the values based on the IR spectra.
Databáze:	OpenAIRE
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