High resolution proton magnetic resonance of selenophene

Author: Heffernan M.L.   Humffray A.A.  

Publisher: Taylor & Francis Ltd

ISSN: 1362-3028

Source: Molecular Physics, Vol.7, Iss.6, 1964-01, pp. : 527-532

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Abstract

The high resolution proton magnetic resonance of selenophene has been studied at 100 Mc/s. The spectrum was analysed as an A 2 X 2 system and the following coupling constants were obtained: J 23 = 5·35, J 24 = 1·05, J 34 = 3·56, J 25 = 2·47 c.p.s. Coupling was also observed between 77 Se and the  and β protons and coupling constants of 48 c.p.s. () and 9·5 c.p.s. (β) were obtained. The τ values were 2·30 () and 2·88 (β). The results are compared with values available for furan, pyrrole and thiophene and the conclusion is drawn that selenophene is probably a planar molecule.