(±)-2,3-Dichlorobutane

    Parameter     ppm  Hz

      D(A)         1.527
      D(B)         4.132
       J(A,A')         0.0
       J(A,B)          6.47
       J(A,B')        -0.08
       J(A',B)        -0.08
       J(A',B')        6.47
       J(B,B')         3.45
     
     BOTHNER-BY,A.A. & NAAR-COLIN,C. J.AM.CHEM.SOC. 84, 743 (1962)