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: CID/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 CID/3-21G*
 hartrees
Energy at 0K-152.329844
Energy at 298.15K-152.334039
Nuclear repulsion energy69.437893
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 CID/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' 3635 3383 6.61      
2 A' 3309 3079 10.72      
3 A' 3267 3040 4.06      
4 A' 3215 2991 5.11      
5 A' 1751 1630 83.72      
6 A' 1545 1437 14.90      
7 A' 1425 1326 3.48      
8 A' 1400 1303 8.97      
9 A' 1130 1052 144.26      
10 A' 981 913 46.82      
11 A' 501 466 14.98      
12 A" 1052 978 25.60      
13 A" 924 859 95.97      
14 A" 726 676 0.21      
15 A" 458 426 167.34      

Unscaled Zero Point Vibrational Energy (zpe) 12658.7 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 11778.9 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 CID/3-21G*
ABC
2.00845 0.34095 0.29147

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.229 -0.062 0.000
C2 0.000 0.446 0.000
O3 -1.207 -0.256 0.000
H4 1.422 -1.129 0.000
H5 2.091 0.590 0.000
H6 -0.193 1.510 0.000
H7 -1.037 -1.226 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.33032.44461.08451.08042.12012.5480
C21.33031.39662.12232.09591.08131.9673
O32.44461.39662.77083.40512.03650.9844
H41.08452.12232.77081.84473.09432.4614
H51.08042.09593.40511.84472.46243.6169
H62.12011.08132.03653.09432.46242.8628
H72.54801.96730.98442.46143.61692.8628

picture of ethenol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 127.372 C1 C2 H6 122.741
C2 C1 H4 122.690 C2 C1 H5 120.425
C2 O3 H7 110.225 O3 C2 H6 109.888
H4 C1 H5 116.885
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability