STRUCTURAL ASPECTS OF OLIGOTHIENYL SERIES FROM X-RAY-POWDER DIFFRACTION DATA

被引:159
作者
PORZIO, W
DESTRI, S
MASCHERPA, M
BRUCKNER, S
机构
[1] CNR,IST CHIM MACROMOLEC,I-20133 MILAN,ITALY
[2] UNIV MODENA,IST CHIM,I-41100 MODENA,ITALY
关键词
D O I
10.1002/actp.1993.010440602
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The structures of the series of oligothienyls (T4-T5-T6) have been determined and refined from X-ray powder diffraction data using the Rietveld full-profile analysis. Unlike polythiophene, all the molecules in the isomorphous series display no internal symmetry, being only approximately planar within 12 degrees. Packing is always achieved through a common molecular disposition, which is usually defined as a herringbone arrangement, with an angle between mean planes of adjacent molecules which spans from 60 degrees to 70 degrees.
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页码:266 / 272
页数:7
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