Saba, Antonio (1994) Synthesis and structure of trans-1,2,3- tris(3-thenoyl)cyclopropane. Acta Crystallographica Section C, Vol. 50 , p. 271-274. ISSN 0108-2701. Article.
The title cyclopropane derivative, C18H12O3S3, was synthesized and its structure investigated by single-crystal X-ray diffraction and spectroscopic methods. This structure analysis addresses the problem of spontaneously resolved helical stereoisomerism. The temperature-dependent 1H NMR spectrum shows a relevant barrier to rotation about the CO-thiophene bonds, with ∆G423 -~ 89 (21) kJ mo1-1.
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