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All results from a given calculation for CH3CH2OH (Ethanol)

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-30.397101
Energy at 298.15K-30.403711
HF Energy-30.093581
Nuclear repulsion energy48.014773
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 MP2/CEP-121G
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' 3631 3544 7.83 120.18 0.30 0.46
2 A' 3085 3011 41.78 56.25 0.74 0.85
3 A' 2983 2912 22.07 200.66 0.02 0.03
4 A' 2966 2895 71.30 60.57 0.23 0.38
5 A' 1548 1511 0.42 2.83 0.75 0.85
6 A' 1523 1487 5.64 22.22 0.74 0.85
7 A' 1462 1427 18.37 5.78 0.51 0.67
8 A' 1435 1400 3.42 1.20 0.59 0.74
9 A' 1252 1222 54.02 9.27 0.64 0.78
10 A' 1076 1050 0.58 8.93 0.44 0.61
11 A' 1024 999 71.49 6.09 0.36 0.53
12 A' 868 847 27.95 10.81 0.27 0.42
13 A' 397 388 16.19 0.43 0.61 0.76
14 A" 3106 3031 49.65 36.71 0.75 0.86
15 A" 3031 2959 56.08 93.41 0.75 0.86
16 A" 1507 1471 5.87 12.56 0.75 0.86
17 A" 1284 1253 0.65 12.39 0.75 0.86
18 A" 1167 1139 3.56 7.13 0.75 0.86
19 A" 824 804 0.00 0.03 0.75 0.86
20 A" 288 281 119.52 4.41 0.75 0.86
21 A" 225 219 65.52 1.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17341.6 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 16925.4 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 MP2/CEP-121G
ABC
1.10019 0.29923 0.25875

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.211 -0.371 0.000
C2 0.000 0.588 0.000
O3 -1.219 -0.278 0.000
H4 -2.035 0.272 0.000
H5 2.152 0.206 0.000
H6 1.184 -1.010 0.896
H7 1.184 -1.010 -0.896
H8 -0.000 1.228 0.901
H9 -0.000 1.228 -0.901

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8 H9
C11.54482.43243.30951.10371.10071.10072.19912.1991
C21.54481.49532.05962.18602.18132.18131.10561.1056
O32.43241.49530.98373.40612.66742.66742.13692.1369
H43.30952.05960.98374.18803.57903.57902.42262.4226
H51.10372.18603.40614.18801.79391.79392.54752.5475
H61.10072.18132.66743.57901.79391.79112.53213.1049
H71.10072.18132.66743.57901.79391.79113.10492.5321
H82.19911.10562.13692.42262.54752.53213.10491.8029
H92.19911.10562.13692.42262.54753.10492.53211.8029

picture of Ethanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 106.266 C1 C2 H8 111.060
C1 C2 H9 111.060 C2 C1 H5 110.137
C2 C1 H6 109.944 C2 C1 H7 109.944
C2 O3 H4 110.671 O3 C2 H8 109.579
O3 C2 H9 109.579 H5 C1 H6 108.940
H5 C1 H7 108.940 H6 C1 H7 108.907
H8 C2 H9 109.248
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability