5-Fluoro-2-thiophenecarbaldehyde

    Parameter     ppm  Hz

      D(A)         6.59
      D(B)         7.48
      D(C)         9.69
      D(X)        45.73
       J(A,B)          4.25
       J(A,C)          0.21
       J(A,X)          1.17
       J(B,C)         -0.15
       J(B,X)          3.66
       J(C,X)          4.20
     
     RODMAR,S. ET AL. ACTA CHEM.SCAND. 25, 3309 (1971)
     F-19 REFERENCE:HEXAFLUOROBENZENE.