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     #     GUI   Heat of formation (Kcal/formula unit) Geometry        Species
                    Ref.        PM7     PM6-D3H4      PM7 PM6-D3H4 
  1955  (JSmol)              -1358.6      -1373.2           23.4       24.7   Eu Complex Sparkle (BUVXAR11) 
  1956  (JSmol)                  457.5          149.2           14.9       12.4   Eu Complex Sparkle (EGOBEH) 
  1957  (JSmol)                -423.7        -561.6           15.0       24.1   Eu Complex Sparkle (FUXPOD) 
  1958  (JSmol)                -282.5        -416.6           17.6       37.3   Eu Complex Sparkle (ICSD 280528) 
  1959  (JSmol)                    13.3        -120.8           28.3       22.1   Eu Complex Sparkle (PIEUAC01) 
  1960  (JSmol)                -532.3        -562.6           18.4       16.6   Eu Complex Sparkle (QAKWUU)