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     #     GUI   Heat of formation (Kcal/formula unit) Geometry        Species
                    Ref.        PM7     PM6-D3H4      PM7 PM6-D3H4 
  1961  (JSmol)              -1312.9      -1512.3           22.7       22.5   Gd Complex Sparkle (BUVVOD01) 
  1962  (JSmol)                -855.0      -1083.3           14.4       44.9   Gd Complex Sparkle (CULNIG10) 
  1963  (JSmol)                -220.3        -576.6           13.7       26.4   Gd Complex Sparkle (ICSD 109886) 
  1964  (JSmol)                -490.1        -876.0           20.0       26.2   Gd Complex Sparkle (JOPJIH01) 
  1965  (JSmol)                  992.1          581.4           23.5       19.1   Gd Complex Sparkle (OBUJIE) 
  1966  (JSmol)                  369.9        -139.8           17.5       18.0   Gd Complex Sparkle (PADEGA10) 
  1967  (JSmol)                  -73.3        -500.0           13.9       13.9   Gd Complex Sparkle (VEDSEC) 
  1968  (JSmol)                  381.0            44.8           13.8       13.2   Gd Complex Sparkle (YUWZOF)