Selenophene-2-carboxylic acid

    Parameter     ppm  Hz

      D(A)         8.03
      D(B)         7.37
      D(C)         8.42
       J(A,B)          3.90
       J(A,C)          1.26
       J(B,C)          5.50
     
      D(D)        10.53
     
     FRINGUELLI,F. ET AL. ACTA CHEM.SCAND. B 28, 175 (1974)
     J(A,SE-77):5.2HZ. J(B,SE-77):7.4HZ. J(C,SE-77):45.2HZ.