Isodesmic Reactions

Target Specie

ΔH˚Rxn(298˚K) Hartrees

ΔH˚Rxn(298˚K) Kcal/mole1

Δf(298˚K)

kcal∙mol−1

Error

kcal∙mol−1

CH2FCH2OH + CH4 = CH3CH2OH + CH3F

−254.173115 −40.447961 −154.926666 −139.683801

−17.81 −56.21 −56.54

0.010609

6.657243

−101.6

±0.2

CH2FCH2OH + CH3CH3 = CH3CH2OH + CH3CH2F

−254.173115 −79.717768 −154.926666 −178.963776

−20.05 −56.21 −65.42

0.000441

0.276731

−101.9

±1.3

Reported ΔfH˚ (298) kcal∙mol−1

−101.7 ± 0.7

Standard Deviation over rxns

±0.1

CH3CHFOH + CH3CH2CH3 = CH3CH2OH + CH3CH2CH2F

−254.19203 −118.990915 −154.926666 −218.237381

−25.02 −56.21 −70.24

0.018898

11.85867

−113.3

±1.5

CH3CHFOH + CH3CH3 = CH3CH2OH + CH3CH2F

−254.19203 −79.717768 −154.926666 −178.963776

−20.05 −56.21 −65.42

0.019356

12.14606

−113.7

±1.3

Reported ΔfH˚ (298) kcal∙mol−1

−113.5 ± 1.4

Standard Deviation over rxns

±0.2

C•HFCH2OH + CH3CH2CH3 = CH3CH2O• + CH3CH2CH2F

−253.518298 −118.990915 −154.268107 −218.237381

−25.02 −3.01 −70.24

0.003725

2.337471

−50.6

±1.4

C•HFCH2OH + CH4 = CH3CH2O• + CH3F

−253.518298 −40.447961 −154.268107 −139.683801

−17.81 −3.01 −56.54

0.014351

9.005382

−50.8

±0.1

Reported ΔfH˚ (298) kcal∙mol−1

−50.7 ± 0.8

Standard Deviation over rxns

±0.1

CH2FCH•OH + CH3CH3 = CH3CH2O• + CH3CH2F

−253.518298 −79.717768 −154.268107 −178.963776

−20.05 −3.01 −65.42

0.012436

7.803702

−56.2

±1.2

CH2FCH•OH + CH4 = CH3CH2O• + CH3F

−253.518298 −40.447961 −154.268107 −139.683801

−17.81 −3.01 −56.54

0.022604

14.18421

−55.9

±0.1

Reported ΔfH˚ (298) kcal∙mol−1

−56.1 ± 0.6