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     #     GUI   Heat of formation (Kcal/formula unit) Geometry        Species
                    Ref.        PM7     PM6-D3H4      PM7 PM6-D3H4 
  1969  (JSmol)              -1328.2      -1379.2           21.6       24.5   Tb Complex Sparkle (BUVXEV01) 
  1970  (JSmol)                -506.0        -655.5           14.4       18.2   Tb Complex Sparkle (FOPPUV) 
  1971  (JSmol)                -503.0        -641.2           23.2       28.5   Tb Complex Sparkle (ICSD 1408781) 
  1972  (JSmol)                  206.9          -15.6           10.1       23.6   Tb Complex Sparkle (ICSD 1522521) 
  1973  (JSmol)                -352.2        -535.5           27.8       29.6   Tb Complex Sparkle (KITGAV) 
  1974  (JSmol)                -394.1        -557.5           15.9       22.8   Tb Complex Sparkle (KUYBEL) 
  1975  (JSmol)                  147.0          -40.5           20.9       17.4   Tb Complex Sparkle (XEXJIT) 
  1976  (JSmol)              -1059.1      -1082.5           24.4       25.6   Tb Complex Sparkle (ZZZARD01) 
  1977  (JSmol)                    47.5          -47.3           16.1       16.4   Tb Complex Sparkle (VAPTEL01)