5-Fluoro-3-thiophenecarbaldehyde

    Parameter     ppm  Hz

      D(A)         7.52
      D(B)         6.79
      D(C)         9.62
      D(X)        35.38
       J(A,B)          1.81
       J(A,C)          0.00
       J(A,X)          3.63
       J(B,C)         -0.38
       J(B,X)          1.37
       J(C,X)          3.29
     
     RODMAR,S. ET AL. ACTA CHEM.SCAND. 25, 3309 (1971)
     F-19 REFERENCE:HEXAFLUOROBENZENE.