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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: wB97X-D/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/6-311G*
 hartrees
Energy at 0K-152.448625
Energy at 298.15K 
HF Energy-152.448625
Nuclear repulsion energy61.696274
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/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3411 3411 1.13 75.22 0.22 0.36
2 A1 1857 1857 0.97 63.02 0.19 0.32
3 A1 1094 1094 9.78 7.19 0.55 0.71
4 A1 895 895 59.13 6.81 0.63 0.77
5 A2 628 628 0.00 5.17 0.75 0.86
6 B1 537 537 98.27 0.45 0.75 0.86
7 B2 3334 3334 36.12 15.84 0.75 0.86
8 B2 954 954 5.35 2.22 0.75 0.86
9 B2 57i 57i 5.91 14.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6326.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6326.7 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 wB97X-D/6-311G*
ABC
1.12313 0.89202 0.49716

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.888
C2 0.000 0.630 -0.460
C3 0.000 -0.630 -0.460
H4 0.000 1.650 -0.789
H5 0.000 -1.650 -0.789

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.48831.48832.35292.3529
C21.48831.25971.07192.3035
C31.48831.25972.30351.0719
H42.35291.07192.30353.3000
H52.35292.30351.07193.3000

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 64.962 O1 C2 H4 132.907
O1 C3 C2 64.962 O1 C3 H5 132.907
C2 O1 C3 50.076 C2 C3 H5 162.131
C3 C2 H4 162.131
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.365      
2 C -0.065      
3 C -0.065      
4 H 0.248      
5 H 0.248      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.558 2.558
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.412 0.000 0.000
y 0.000 -11.332 0.000
z 0.000 0.000 -18.576
Traceless
 xyz
x -3.458 0.000 0.000
y 0.000 7.162 0.000
z 0.000 0.000 -3.704
Polar
3z2-r2-7.407
x2-y2-7.080
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.795 0.000 0.000
y 0.000 4.390 0.000
z 0.000 0.000 2.938


<r2> (average value of r2) Å2
<r2> 30.364
(<r2>)1/2 5.510