1-(5-Fluoro-thiophen-2-yl)-ethanone

    Parameter     ppm  Hz

      D(A)         6.50
      D(B)         7.40
      D(C)         2.39
      D(X)        43.14
       J(A,B)          4.29
       J(A,C)          0.0
       J(A,X)          1.45
       J(B,C)          0.0
       J(B,X)          3.52
       J(C,X)          0.44
     
     RODMAR,S. ET AL. ACTA CHEM.SCAND. 25, 3309 (1971)
     F-19 REFERENCE:HEXAFLUOROBENZENE.