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: wB97X-D/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/3-21G
 hartrees
Energy at 0K-154.135572
Energy at 298.15K-154.142285
HF Energy-154.135572
Nuclear repulsion energy81.112959
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 wB97X-D/3-21G
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' 3611 3611 0.80 132.38 0.31 0.48
2 A' 3172 3172 20.31 54.87 0.75 0.86
3 A' 3093 3093 10.24 98.41 0.02 0.03
4 A' 3021 3021 54.98 98.80 0.15 0.25
5 A' 1602 1602 2.18 8.55 0.70 0.83
6 A' 1576 1576 6.93 29.96 0.75 0.86
7 A' 1488 1488 6.45 3.74 0.60 0.75
8 A' 1468 1468 13.56 2.16 0.71 0.83
9 A' 1308 1308 75.52 10.03 0.74 0.85
10 A' 1137 1137 5.72 5.97 0.45 0.62
11 A' 1028 1028 61.27 2.19 0.25 0.41
12 A' 914 914 7.56 7.76 0.34 0.51
13 A' 407 407 15.97 0.32 0.72 0.84
14 A" 3178 3178 22.55 43.60 0.75 0.86
15 A" 3051 3051 69.40 87.17 0.75 0.86
16 A" 1555 1555 7.29 21.66 0.75 0.86
17 A" 1340 1340 1.78 16.37 0.75 0.86
18 A" 1198 1198 4.63 6.56 0.75 0.86
19 A" 874 874 0.54 0.03 0.75 0.86
20 A" 316 316 142.84 7.86 0.75 0.86
21 A" 244 244 16.49 0.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17790.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17790.0 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 wB97X-D/3-21G
ABC
1.12679 0.31222 0.26930

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.178 -0.393 0.000
C2 0.000 0.576 0.000
O3 -1.197 -0.248 0.000
H4 -1.981 0.349 0.000
H5 2.127 0.151 0.000
H6 1.125 -1.029 0.887
H7 1.125 -1.029 -0.887
H8 0.053 1.222 0.889
H9 0.053 1.222 -0.889

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8 H9
C11.52552.37963.24491.09371.09281.09282.15912.1591
C21.52551.45301.99362.16912.15152.15151.09991.0999
O32.37961.45300.98523.34782.60562.60562.12432.1243
H43.24491.99360.98524.11253.51183.51182.38512.3851
H51.09372.16913.34784.11251.78431.78432.49712.4971
H61.09282.15152.60563.51181.78431.77342.49303.0607
H71.09282.15152.60563.51181.78431.77343.06072.4930
H82.15911.09992.12432.38512.49712.49303.06071.7778
H92.15911.09992.12432.38512.49713.06072.49301.7778

picture of Ethanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 106.035 C1 C2 H8 109.586
C1 C2 H9 109.586 C2 C1 H5 110.738
C2 C1 H6 109.410 C2 C1 H7 109.410
C2 O3 H4 108.168 O3 C2 H8 111.890
O3 C2 H9 111.890 H5 C1 H6 109.386
H5 C1 H7 109.386 H6 C1 H7 108.473
H8 C2 H9 107.832
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.620      
2 C -0.177      
3 O -0.579      
4 H 0.351      
5 H 0.199      
6 H 0.226      
7 H 0.226      
8 H 0.187      
9 H 0.187      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.065 1.770 0.000 1.771
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.938 -2.481 0.000
y -2.481 -19.628 0.000
z 0.000 0.000 -19.725
Traceless
 xyz
x 2.739 -2.481 0.000
y -2.481 -1.296 0.000
z 0.000 0.000 -1.442
Polar
3z2-r2-2.885
x2-y22.690
xy-2.481
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.118 -0.105 0.000
y -0.105 3.519 0.000
z 0.000 0.000 3.187


<r2> (average value of r2) Å2
<r2> 54.304
(<r2>)1/2 7.369