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: BLYP/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 BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-154.977705
Energy at 298.15K-154.984257
HF Energy-154.977705
Nuclear repulsion energy81.045766
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 BLYP/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' 3672 3652 6.91 114.24 0.30 0.46
2 A' 3039 3023 28.98 59.52 0.75 0.85
3 A' 2969 2953 16.43 109.45 0.01 0.01
4 A' 2877 2861 72.68 110.84 0.11 0.19
5 A' 1491 1483 1.94 2.63 0.58 0.73
6 A' 1464 1456 2.26 24.42 0.74 0.85
7 A' 1417 1409 13.80 3.69 0.72 0.83
8 A' 1364 1356 0.40 1.59 0.63 0.78
9 A' 1245 1238 64.39 6.70 0.74 0.85
10 A' 1071 1065 17.64 4.96 0.43 0.61
11 A' 990 984 57.34 3.36 0.16 0.27
12 A' 868 863 13.86 5.28 0.35 0.52
13 A' 401 399 9.16 0.28 0.73 0.84
14 A" 3040 3023 32.65 47.63 0.75 0.86
15 A" 2895 2879 71.74 89.80 0.75 0.86
16 A" 1447 1439 3.29 14.95 0.75 0.86
17 A" 1255 1248 0.08 11.90 0.75 0.86
18 A" 1147 1141 3.58 3.13 0.75 0.86
19 A" 798 794 0.04 0.11 0.75 0.86
20 A" 276 274 68.62 3.48 0.75 0.86
21 A" 228 226 34.63 1.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16976.4 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 16883.0 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 BLYP/6-31G(2df,p)
ABC
1.14791 0.30772 0.26736

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.181 -0.413 0.000
C2 0.000 0.560 0.000
O3 -1.208 -0.218 0.000
H4 -1.956 0.404 0.000
H5 2.135 0.136 0.000
H6 1.148 -1.058 0.891
H7 1.148 -1.058 -0.891
H8 0.053 1.218 0.893
H9 0.053 1.218 -0.893

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8 H9
C11.53062.39733.24131.10101.10081.10082.17472.1747
C21.53061.43741.96192.17692.17542.17541.10991.1099
O32.39731.43740.97223.36222.65572.65572.10952.1095
H43.24131.96190.97224.09963.54463.54462.34412.3441
H51.10102.17693.36224.09961.78771.78772.51032.5103
H61.10082.17542.65573.54461.78771.78272.52573.0922
H71.10082.17542.65573.54461.78771.78273.09222.5257
H82.17471.10992.10952.34412.51032.52573.09221.7853
H92.17471.10992.10952.34412.51033.09222.52571.7853

picture of Ethanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.707 C1 C2 H8 109.869
C1 C2 H9 109.869 C2 C1 H5 110.563
C2 C1 H6 110.461 C2 C1 H7 110.461
C2 O3 H4 107.447 O3 C2 H8 111.163
O3 C2 H9 111.163 H5 C1 H6 108.569
H5 C1 H7 108.569 H6 C1 H7 108.146
H8 C2 H9 107.079
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.310      
2 C -0.043      
3 O -0.368      
4 H 0.265      
5 H 0.096      
6 H 0.110      
7 H 0.110      
8 H 0.070      
9 H 0.070      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.026 1.351 0.000 1.351
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.587 -2.183 0.000
y -2.183 -19.751 0.000
z 0.000 0.000 -19.933
Traceless
 xyz
x 2.255 -2.183 0.000
y -2.183 -0.991 0.000
z 0.000 0.000 -1.264
Polar
3z2-r2-2.528
x2-y22.164
xy-2.183
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.800 -0.181 0.000
y -0.181 4.171 0.000
z 0.000 0.000 3.830


<r2> (average value of r2) Å2
<r2> 54.857
(<r2>)1/2 7.407