5-BroMo-2-fluorothiophene

    Parameter     ppm  Hz

      D(A)         6.56
      D(B)         6.10
      D(X)        36.17
       J(A,B)          4.15
       J(A,X)          3.43
       J(B,X)          2.39
     
     RODMAR,S. ET AL. ACTA CHEM.SCAND. 25, 3309 (1971)
     F-19 REFERENCE:HEXAFLUOROBENZENE.