return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CH2OH (Ethanol)

using model chemistry: B2PLYP=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-154.914171
Energy at 298.15K-154.920847
HF Energy-154.727185
Nuclear repulsion energy81.956963
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B2PLYP=FULL/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3868 3868 21.01 94.69 0.29 0.45
2 A' 3162 3162 23.45 54.72 0.75 0.86
3 A' 3080 3080 13.03 104.29 0.01 0.02
4 A' 3013 3013 62.35 100.45 0.11 0.20
5 A' 1552 1552 1.73 3.16 0.65 0.79
6 A' 1524 1524 2.15 19.95 0.75 0.86
7 A' 1478 1478 13.75 3.39 0.59 0.75
8 A' 1417 1417 0.95 0.77 0.70 0.82
9 A' 1290 1290 74.88 4.75 0.74 0.85
10 A' 1130 1130 27.98 5.20 0.52 0.68
11 A' 1050 1050 47.85 3.58 0.15 0.26
12 A' 916 916 10.08 5.82 0.31 0.47
13 A' 417 417 10.18 0.25 0.68 0.81
14 A" 3166 3166 25.56 42.94 0.75 0.86
15 A" 3044 3044 59.24 80.58 0.75 0.86
16 A" 1506 1506 3.99 13.75 0.75 0.86
17 A" 1314 1314 0.01 10.45 0.75 0.86
18 A" 1198 1198 4.45 2.21 0.75 0.86
19 A" 827 827 0.03 0.08 0.75 0.86
20 A" 292 292 80.77 2.87 0.75 0.86
21 A" 246 246 33.54 0.70 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17744.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17744.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULL/6-31G(2df,p)
ABC
1.17095 0.31510 0.27370

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.167 -0.410 0.000
C2 0.000 0.556 0.000
O3 -1.193 -0.214 0.000
H4 -1.936 0.393 0.000
H5 2.115 0.130 0.000
H6 1.129 -1.048 0.884
H7 1.129 -1.048 -0.884
H8 0.051 1.205 0.885
H9 0.051 1.205 -0.885

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8 H9
C11.51552.36833.20531.09141.09071.09072.15362.1536
C21.51551.41961.94242.15802.15162.15161.09811.0981
O32.36831.41960.95933.32612.62052.62052.08362.0836
H43.20531.94240.95934.05963.49993.49992.32092.3209
H51.09142.15803.32614.05961.77301.77302.49012.4901
H61.09072.15162.62053.49991.77301.76772.49783.0604
H71.09072.15162.62053.49991.77301.76773.06042.4978
H82.15361.09812.08362.32092.49012.49783.06041.7692
H92.15361.09812.08362.32092.49013.06042.49781.7692

picture of Ethanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.538 C1 C2 H8 109.945
C1 C2 H9 109.945 C2 C1 H5 110.694
C2 C1 H6 110.228 C2 C1 H7 110.228
C2 O3 H4 107.906 O3 C2 H8 111.052
O3 C2 H9 111.052 H5 C1 H6 108.688
H5 C1 H7 108.688 H6 C1 H7 108.254
H8 C2 H9 107.322
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability