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/6-31G*

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/6-31G*
 hartrees
Energy at 0K-154.851535
Energy at 298.15K-154.858243
HF Energy-154.706755
Nuclear repulsion energy81.755933
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/6-31G*
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' 3779 3587 13.84 107.96 0.31 0.47
2 A' 3168 3007 28.72 58.57 0.75 0.86
3 A' 3091 2934 14.31 107.03 0.01 0.03
4 A' 3026 2873 68.33 102.68 0.13 0.22
5 A' 1583 1502 2.46 4.77 0.66 0.80
6 A' 1552 1474 3.12 24.91 0.75 0.86
7 A' 1500 1423 16.60 5.85 0.63 0.77
8 A' 1445 1372 0.36 0.91 0.63 0.77
9 A' 1305 1239 86.30 6.69 0.74 0.85
10 A' 1135 1077 21.08 6.01 0.55 0.71
11 A' 1061 1007 54.94 3.05 0.20 0.33
12 A' 924 877 10.82 6.30 0.37 0.54
13 A' 422 400 11.77 0.27 0.67 0.80
14 A" 3176 3015 30.73 47.06 0.75 0.86
15 A" 3057 2901 72.09 86.81 0.75 0.86
16 A" 1535 1457 4.43 17.14 0.75 0.86
17 A" 1326 1259 0.10 14.29 0.75 0.86
18 A" 1211 1149 4.83 3.45 0.75 0.86
19 A" 839 797 0.00 0.05 0.75 0.86
20 A" 305 290 100.06 4.24 0.75 0.86
21 A" 257 244 35.45 0.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17847.6 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 16940.9 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/6-31G*
ABC
1.16444 0.31404 0.27265

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.170 -0.406 0.000
C2 0.000 0.558 0.000
O3 -1.194 -0.220 0.000
H4 -1.945 0.391 0.000
H5 2.119 0.139 0.000
H6 1.133 -1.045 0.886
H7 1.133 -1.045 -0.886
H8 0.047 1.207 0.886
H9 0.047 1.207 -0.886

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8 H9
C11.51632.37193.21591.09361.09251.09252.15672.1567
C21.51631.42551.95242.15972.15342.15341.09961.0996
O32.37191.42550.96823.33232.62312.62312.08872.0887
H43.21591.95240.96824.07173.51023.51022.32792.3279
H51.09362.15973.33234.07171.77661.77662.49412.4941
H61.09252.15342.62313.51021.77661.77112.50053.0646
H71.09252.15342.62313.51021.77661.77113.06462.5005
H82.15671.09962.08872.32792.49412.50053.06461.7726
H92.15671.09962.08872.32792.49413.06462.50051.7726

picture of Ethanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.430 C1 C2 H8 110.045
C1 C2 H9 110.045 C2 C1 H5 110.641
C2 C1 H6 110.208 C2 C1 H7 110.208
C2 O3 H4 107.777 O3 C2 H8 110.963
O3 C2 H9 110.963 H5 C1 H6 108.712
H5 C1 H7 108.712 H6 C1 H7 108.302
H8 C2 H9 107.412
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.459      
2 C -0.030      
3 O -0.637      
4 H 0.401      
5 H 0.146      
6 H 0.164      
7 H 0.164      
8 H 0.125      
9 H 0.125      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.005 1.613 0.000 1.613
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.437 -2.422 -0.009
y -2.422 -19.821 -0.002
z -0.009 -0.002 -20.036
Traceless
 xyz
x 2.491 -2.422 -0.009
y -2.422 -1.084 -0.002
z -0.009 -0.002 -1.407
Polar
3z2-r2-2.815
x2-y22.383
xy-2.422
xz-0.009
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.285 -0.119 0.000
y -0.119 3.788 0.000
z 0.000 0.000 3.486


<r2> (average value of r2) Å2
<r2> 54.056
(<r2>)1/2 7.352