Trimethylene selenide

    Parameter     ppm  Hz

      D(A)         3.299
      D(B)         3.115
       J(A,A')       -12.10
       J(A,B)          8.70
       J(A,B')         6.47
       J(A,B'')        8.70
       J(A,B''')       6.47
       J(A',B)         6.47
       J(A',B')        8.70
       J(A',B'')       6.47
       J(A',B''')      8.70
       J(B,B')        -7.91
       J(B,B'')        0.82
       J(B,B''')      -0.41
       J(B',B'')      -0.41
       J(B',B''')      0.82
       J(B'',B''')
                      -7.91
     
     MONIZ,W.B. J.PHYS.CHEM. 73, 1124 (1969)