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 CH2CHOH (ethenol)

using model chemistry: PBEPBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-31+G**
 hartrees
Energy at 0K-153.637660
Energy at 298.15K-153.641729
Nuclear repulsion energy69.667565
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 PBEPBE/6-31+G**
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' 3686 3644 26.28      
2 A' 3202 3165 6.62      
3 A' 3141 3106 5.38      
4 A' 3098 3063 6.23      
5 A' 1655 1636 180.96      
6 A' 1399 1383 14.14      
7 A' 1318 1303 10.20      
8 A' 1276 1262 1.67      
9 A' 1090 1077 185.66      
10 A' 929 919 6.63      
11 A' 473 468 12.22      
12 A" 949 938 46.55      
13 A" 774 765 77.14      
14 A" 683 676 2.01      
15 A" 470 465 102.07      

Unscaled Zero Point Vibrational Energy (zpe) 12072.3 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 11934.7 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 PBEPBE/6-31+G**
ABC
1.99062 0.34540 0.29433

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.225 -0.114 0.000
C2 0.000 0.444 0.000
O3 -1.205 -0.208 0.000
H4 1.378 -1.198 0.000
H5 2.110 0.523 0.000
H6 -0.158 1.527 0.000
H7 -1.042 -1.171 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.34582.43111.09521.09092.14542.5014
C21.34581.36942.14352.11181.09431.9220
O32.43111.36942.76583.39452.02580.9770
H41.09522.14352.76581.87093.12782.4201
H51.09092.11183.39451.87092.48013.5790
H62.14541.09432.02583.12782.48012.8391
H72.50141.92200.97702.42013.57902.8391

picture of ethenol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 127.112 C1 C2 H6 122.766
C2 C1 H4 122.511 C2 C1 H5 119.789
C2 O3 H7 108.843 O3 C2 H6 110.122
H4 C1 H5 117.701
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.340      
2 C -0.031      
3 O -0.419      
4 H 0.137      
5 H 0.158      
6 H 0.155      
7 H 0.339      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.547 -0.881 0.000 1.037
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.615 1.421 0.000
y 1.421 -14.512 0.000
z 0.000 0.000 -21.526
Traceless
 xyz
x -2.596 1.421 0.000
y 1.421 6.558 0.000
z 0.000 0.000 -3.963
Polar
3z2-r2-7.925
x2-y2-6.103
xy1.421
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.156 -0.378 0.000
y -0.378 4.317 0.000
z 0.000 0.000 3.295


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000