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=FULL/Def2TZVPP

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=FULL/Def2TZVPP
 hartrees
Energy at 0K-154.805830
Energy at 298.15K-154.812507
HF Energy-154.149286
Nuclear repulsion energy82.177853
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=FULL/Def2TZVPP
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' 3867 3867 36.18 92.65 0.24 0.38
2 A' 3180 3180 18.10 50.93 0.75 0.86
3 A' 3089 3089 12.08 147.37 0.01 0.01
4 A' 3049 3049 57.00 125.25 0.08 0.15
5 A' 1546 1546 1.33 3.21 0.72 0.83
6 A' 1518 1518 2.45 9.73 0.75 0.85
7 A' 1470 1470 11.69 3.31 0.34 0.51
8 A' 1411 1411 2.38 0.07 0.40 0.57
9 A' 1279 1279 63.63 1.91 0.71 0.83
10 A' 1128 1128 38.53 5.43 0.54 0.70
11 A' 1061 1061 45.87 4.98 0.14 0.24
12 A' 918 918 12.67 5.13 0.26 0.41
13 A' 419 419 10.80 0.28 0.66 0.80
14 A" 3185 3185 20.35 37.23 0.75 0.86
15 A" 3090 3090 40.46 84.64 0.75 0.86
16 A" 1499 1499 5.76 7.21 0.75 0.86
17 A" 1321 1321 0.02 6.61 0.75 0.86
18 A" 1193 1193 3.42 0.81 0.75 0.86
19 A" 827 827 0.05 0.08 0.75 0.86
20 A" 293 293 78.58 1.77 0.75 0.86
21 A" 242 242 39.91 0.43 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17792.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17792.3 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=FULL/Def2TZVPP
ABC
1.17811 0.31672 0.27513

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.167 -0.398 0.000
C2 0.000 0.556 0.000
O3 -1.189 -0.225 0.000
H4 -1.938 0.375 0.000
H5 2.106 0.149 0.000
H6 1.132 -1.032 0.881
H7 1.132 -1.032 -0.881
H8 0.040 1.197 0.882
H9 0.040 1.197 -0.882

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8 H9
C11.50762.36273.20021.08631.08541.08542.14302.1430
C21.50761.42241.94672.14462.13962.13961.09081.0908
O32.36271.42240.95933.31592.61072.61072.07572.0757
H43.20021.94670.95934.05023.49013.49012.31662.3166
H51.08632.14463.31594.05021.76541.76542.47852.4785
H61.08542.13962.61073.49011.76541.76172.48163.0439
H71.08542.13962.61073.49011.76541.76173.04392.4816
H82.14301.09082.07572.31662.47852.48163.04391.7637
H92.14301.09082.07572.31662.47853.04392.48161.7637

picture of Ethanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.454 C1 C2 H8 110.089
C1 C2 H9 110.089 C2 C1 H5 110.492
C2 C1 H6 110.141 C2 C1 H7 110.141
C2 O3 H4 108.064 O3 C2 H8 110.666
O3 C2 H9 110.666 H5 C1 H6 108.764
H5 C1 H7 108.764 H6 C1 H7 108.489
H8 C2 H9 107.889
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability