2-Fluoro-5-iodothiophene

    Parameter     ppm  Hz

      D(A)         6.79
      D(B)         6.05
      D(X)        38.75
       J(A,B)          4.06
       J(A,X)          3.22
       J(B,X)          2.22
     
     RODMAR,S. ET AL. ACTA CHEM.SCAND. 25, 3309 (1971)
     F-19 REFERENCE:HEXAFLUOROBENZENE.