Skip to main content
. 2014 Apr 1;10(7):2802–2812. doi: 10.1021/ct500016d

Table 3. Computed Absolute Free Energies of Hydration for 1.14*CM1A and 1.27*CM5 Charge Models (kcal/mol)a.

molecule name molecular formula 1.14* CM1A 1.27* CM5 OPLS_2005b AM1-BCC/GAFFc exptl.d
methanol CH3OH –3.09 –4.31 –4.33 –3.48 –5.10
chloromethane CH3Cl 0.87 0.64 0.23 0.81 –0.55
methylamine CH3NH2 –5.12 –3.39 –2.98 –3.44 –4.56
ethane CH3CH3 2.92 2.88 2.30 2.58 1.83
methanethiol CH3SH 0.56 0.35 –0.51 –0.26 –1.24
dimethyl ether CH3OCH3 –0.90 –2.43 –0.75 –0.85 –1.91
dimethyl sulfide CH3SCH3 1.18 0.98 –0.62 0.26 –1.61
acetonitrile CH3CN –2.59 –4.86 –3.70 –1.67 –3.89
dimethylamine (CH3)2NH –3.20 –2.33 –2.47 –3.11 –4.30
propane CH3CH2CH3 3.30 3.25 2.42 2.56 1.96
propene CH3CHCH2 2.76 2.83 1.74 2.44 1.32
acetone CH3COCH3 –1.91 –3.42 –2.64 –3.36 –3.81
acetaldehyde CH3CHO –1.93 –3.12 –2.10 –3.39 –3.50
acetic acid CH3COOH –5.81 –6.69 –5.44 –5.95 –6.70
methyl acetate CH3COOCH3 –3.27 –3.38 –1.54 –3.73 –3.32
methyl formate HCOOCH3 –3.62 –3.30 –3.46 –3.17 –2.78
acetamide CH3CONH2 –10.14 –12.06 –8.47 –8.62 –9.71e
(Z)-N-methylacetamide CH3CONHCH3 –9.62 –11.18 –8.47 –8.39 –10.08e
(E)-N-methylacetamide CH3CONHCH3 –8.34 –10.02     –10.08e
N,N-dimethylacetamide CH3CON(CH3)2 –8.18 –8.76 –7.31   –8.55e
nitroethane CH3CH2NO2 –6.35 –3.39 –2.75 –1.73 –3.71
dimethyl sulfoxide CH3SOCH3 –12.88 –13.74   –8.32 –10.11
benzene C6H6 –1.14 0.03 –0.06 –0.70 –0.86
fluorobenzene C6H5F 0.01 0.62   –0.07 –0.80
chlorobenzene C6H5Cl –0.48 0.77 0.29 –0.60 –1.12
bromobenzene C6H5Br –1.27 –0.01 –0.34 –0.37 –1.46
benzonitrile C6H5CN –3.41 –5.24 –2.30 –2.74 –4.21
toluene C6H5CH3 –1.21 0.09 –0.74 –0.71 –0.89
trifluorotoluene C6H5CF3 0.17 1.35   –0.55 –0.25
phenol C6H5OH –5.65 –5.04 –4.64 –5.67 –6.62
anisole C6H5OCH3 –2.81 –2.05 –0.72 –2.30 –2.46
aniline C6H5NH2 –7.30 –5.94 –3.60 –5.92 –5.49
N-methylaniline C6H5NHCH3 –6.79 –4.32   –5.74 –4.69
N,N-dimethylaniline C6H5N(CH3)2 –5.15 –2.95   –4.70 –3.45
nitrobenzene C6H5NO2 –8.11 –3.49 –2.61 –3.40 –4.12
acetophenone C6H5COCH3 –4.54 –4.25 –3.44 –5.07 –4.58
benzamide C6H5CONH2 –13.26 –12.84   –10.19 –11.01
α-methylstyrene C6H5CCH2CH3 –0.98 0.58   –1.26 –1.24
methyl benzoate C6H5COOCH3 –4.31 –3.58 –2.44 –5.06 –3.93
thiophenol C6H5SH –2.32 –0.83 –0.75 –1.43 –2.55
thioanisole C6H5SCH3 –2.16 –0.71 –1.22 –1.21 –2.73
pyridine C5H5N –3.08 –3.56 –2.68 –3.45 –4.70
mean unsigned error   1.17 1.10 1.21 0.95  
a

Results obtained from a series of FEP/SOS calculations; computed uncertainties are less than 0.25 kcal/mol.

b

ref (31b).

c

ref (26b).

d

ref (50).

e

ref (51).