The 1H n.m.r. spectra of thianthren and 2,7-dichlorothianthren dissolved in the Merck Nematic Phase IV were analysed and the structural parameters obtained. These molecules in solution adopt a folded conformation about the axis connecting the two sulphur heteroatoms. The angle of folding is 140.6° for thianthren and 139.8° for 2,7-dichlorothianthren. The correspondent standard deviations are ±0.4 and ±0.7°, respectively.
Conformation of thianthren and 2,7-dichlorothianthren partially oriented in a nematic phase / G. Fronza, E. Ragg, G. Ronsisvalle. - In: JOURNAL OF THE CHEMICAL SOCIETY. PERKIN TRANSACTIONS 2. - ISSN 1472-779X. - :9(1982), pp. 1209-1211.
Conformation of thianthren and 2,7-dichlorothianthren partially oriented in a nematic phase
E. RaggSecondo
;
1982
Abstract
The 1H n.m.r. spectra of thianthren and 2,7-dichlorothianthren dissolved in the Merck Nematic Phase IV were analysed and the structural parameters obtained. These molecules in solution adopt a folded conformation about the axis connecting the two sulphur heteroatoms. The angle of folding is 140.6° for thianthren and 139.8° for 2,7-dichlorothianthren. The correspondent standard deviations are ±0.4 and ±0.7°, respectively.
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