CONFORMATIONAL STUDY OF 2,2'-BISELENOPHENE PARTIALLY ORIENTED IN A NEMATIC LIQUID-CRYSTAL PHASE BY PMR SPECTRA INCLUDING SE-77 SATELLITES

被引:12
作者
CHIDICHIMO, G [1 ]
LELJ, F [1 ]
LONGERI, M [1 ]
RUSSO, N [1 ]
VERACINI, CA [1 ]
机构
[1] UNIV PISA,IST CHIM FIS,CNR,CHIM QUANTIST & ENERGET MOLEC LAB,I-56100 PISA,ITALY
关键词
D O I
10.1016/0009-2614(79)85184-2
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Different models for conformational equilibrium of 2,2′-biselenophene have been examined in order to reproduce the DHH and DSeH direct dipolar couplings obtained by NMR spectra using liquid crystal solvents. The results allow the rigorous exclusion of various conformational possibilities and confine the conformation to an equilibrium between two twisted conformers, the transoid one being the more abundant. © 1979.
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页码:384 / 387
页数:4
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