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: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-154.336169
Energy at 298.15K-154.342782
HF Energy-154.040268
Nuclear repulsion energy79.841101
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/LANL2DZ
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' 3658 3523 6.71 113.57 0.30 0.46
2 A' 3138 3022 40.77 47.15 0.74 0.85
3 A' 3037 2925 22.72 176.16 0.02 0.03
4 A' 3022 2910 75.05 64.32 0.16 0.28
5 A' 1556 1498 0.73 2.43 0.75 0.85
6 A' 1542 1485 6.06 20.09 0.74 0.85
7 A' 1467 1413 18.99 4.06 0.47 0.64
8 A' 1447 1394 1.45 0.81 0.74 0.85
9 A' 1264 1217 60.87 12.96 0.59 0.74
10 A' 1091 1051 0.14 7.76 0.39 0.56
11 A' 1024 986 67.95 5.98 0.49 0.66
12 A' 869 837 23.83 11.87 0.22 0.37
13 A' 403 388 17.56 0.43 0.62 0.76
14 A" 3156 3039 48.06 31.70 0.75 0.86
15 A" 3080 2966 60.22 67.59 0.75 0.86
16 A" 1522 1466 6.53 12.82 0.75 0.86
17 A" 1304 1256 1.04 15.50 0.75 0.86
18 A" 1180 1136 4.85 5.66 0.75 0.86
19 A" 850 818 0.93 0.23 0.75 0.86
20 A" 297 286 136.41 6.25 0.75 0.86
21 A" 228 220 59.02 1.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17566.4 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 16918.2 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 MP2/LANL2DZ
ABC
1.09817 0.30035 0.25947

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.208 -0.371 0.000
C2 0.000 0.589 0.000
O3 -1.216 -0.277 0.000
H4 -2.037 0.267 0.000
H5 2.152 0.204 0.000
H6 1.181 -1.013 0.896
H7 1.181 -1.013 -0.896
H8 0.003 1.232 0.901
H9 0.003 1.232 -0.901

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8 H9
C11.54282.42643.30751.10521.10241.10242.19842.1984
C21.54281.49292.06252.18612.18212.18211.10711.1071
O32.42641.49290.98463.40262.66302.66302.13882.1388
H43.30752.06250.98464.18973.57733.57732.42992.4299
H51.10522.18613.40264.18971.79631.79632.54692.5469
H61.10242.18212.66303.57731.79631.79172.53493.1072
H71.10242.18212.66303.57731.79631.79173.10722.5349
H82.19841.10712.13882.42992.54692.53493.10721.8023
H92.19841.10712.13882.42992.54693.10722.53491.8023

picture of Ethanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 106.113 C1 C2 H8 111.054
C1 C2 H9 111.054 C2 C1 H5 110.193
C2 C1 H6 110.047 C2 C1 H7 110.047
C2 O3 H4 111.041 O3 C2 H8 109.805
O3 C2 H9 109.805 H5 C1 H6 108.909
H5 C1 H7 108.909 H6 C1 H7 108.699
H8 C2 H9 108.977
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability