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: B3PW91/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/TZVP
 hartrees
Energy at 0K-155.043123
Energy at 298.15K-155.049787
HF Energy-155.043123
Nuclear repulsion energy81.871835
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 B3PW91/TZVP
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' 3856 3718 25.09 107.96 0.27 0.43
2 A' 3124 3012 26.35 60.39 0.75 0.86
3 A' 3048 2939 15.28 152.80 0.01 0.01
4 A' 2984 2878 70.55 139.07 0.09 0.17
5 A' 1525 1471 2.23 4.30 0.66 0.79
6 A' 1497 1443 3.05 16.35 0.75 0.86
7 A' 1453 1401 13.41 4.24 0.56 0.72
8 A' 1400 1350 2.58 0.25 0.71 0.83
9 A' 1268 1223 72.11 3.68 0.73 0.84
10 A' 1112 1073 32.23 6.24 0.60 0.75
11 A' 1041 1003 57.61 4.02 0.16 0.27
12 A' 906 873 12.62 5.05 0.40 0.57
13 A' 417 403 12.43 0.40 0.66 0.80
14 A" 3128 3017 29.22 47.24 0.75 0.86
15 A" 3013 2906 56.87 103.84 0.75 0.86
16 A" 1477 1424 6.46 10.56 0.75 0.86
17 A" 1301 1255 0.15 12.03 0.75 0.86
18 A" 1179 1137 4.24 1.20 0.75 0.86
19 A" 821 792 0.11 0.13 0.75 0.86
20 A" 287 276 79.22 2.21 0.75 0.86
21 A" 247 238 57.74 0.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17541.9 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 16915.6 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 B3PW91/TZVP
ABC
1.18007 0.31293 0.27264

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.172 -0.403 0.000
C2 0.000 0.551 0.000
O3 -1.197 -0.217 0.000
H4 -1.946 0.385 0.000
H5 2.114 0.150 0.000
H6 1.145 -1.042 0.885
H7 1.145 -1.042 -0.885
H8 0.045 1.199 0.887
H9 0.045 1.199 -0.887

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8 H9
C11.51092.37633.21591.09261.09181.09182.14962.1496
C21.51091.42281.95342.15202.15252.15251.09901.0990
O32.37631.42280.96093.33192.63672.63672.08242.0824
H43.21591.95340.96094.06733.51823.51822.32712.3271
H51.09262.15203.33194.06731.77241.77242.48352.4835
H61.09182.15252.63673.51821.77241.76982.49653.0611
H71.09182.15252.63673.51821.77241.76983.06112.4965
H82.14961.09902.08242.32712.48352.49653.06111.7731
H92.14961.09902.08242.32712.48353.06112.49651.7731

picture of Ethanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 108.153 C1 C2 H8 109.894
C1 C2 H9 109.894 C2 C1 H5 110.468
C2 C1 H6 110.549 C2 C1 H7 110.549
C2 O3 H4 108.511 O3 C2 H8 110.677
O3 C2 H9 110.677 H5 C1 H6 108.459
H5 C1 H7 108.459 H6 C1 H7 108.284
H8 C2 H9 107.550
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.329      
2 C -0.096      
3 O -0.389      
4 H 0.265      
5 H 0.110      
6 H 0.123      
7 H 0.123      
8 H 0.097      
9 H 0.097      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.071 1.694 0.000 1.695
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.645 -2.539 0.000
y -2.539 -20.057 0.000
z 0.000 0.000 -20.144
Traceless
 xyz
x 2.456 -2.539 0.000
y -2.539 -1.163 0.000
z 0.000 0.000 -1.293
Polar
3z2-r2-2.587
x2-y22.412
xy-2.539
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.862 -0.133 0.000
y -0.133 4.388 0.000
z 0.000 0.000 4.091


<r2> (average value of r2) Å2
<r2> 54.166
(<r2>)1/2 7.360