2,2-Dibromocyclobutanone

    Parameter     ppm  Hz

      D(A)         3.40
      D(B)         3.12
       J(A,A')       -15.31
       J(A,B)         11.16
       J(A,B')         7.67
       J(A',B)         7.67
       J(A',B')       11.16
       J(B,B')       -10.92
     
     SERVIS,K.L. & ROBERTS,J.D. J.PHYS.CHEM. 67, 2885 (1963)