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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: wB97X-D/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-152.439317
Energy at 298.15K 
HF Energy-152.439317
Nuclear repulsion energy61.448145
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/daug-cc-pVDZ
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 3420 3420 3.08 82.38 0.18 0.31
2 A1 1855 1855 3.68 98.47 0.08 0.15
3 A1 1082 1082 17.95 6.34 0.67 0.80
4 A1 899 899 62.71 5.58 0.74 0.85
5 A2 648 648 0.00 5.63 0.75 0.86
6 B1 544 544 90.37 0.02 0.75 0.86
7 B2 3341 3341 54.24 15.34 0.75 0.86
8 B2 969 969 6.58 2.17 0.75 0.86
9 B2 190 190 2.93 16.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6473.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6473.6 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 wB97X-D/daug-cc-pVDZ
ABC
1.10931 0.88870 0.49341

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.890
C2 0.000 0.634 -0.461
C3 0.000 -0.634 -0.461
H4 0.000 1.658 -0.795
H5 0.000 -1.658 -0.795

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.49191.49192.36372.3637
C21.49191.26881.07662.3163
C31.49191.26882.31631.0766
H42.36371.07662.31633.3152
H52.36372.31631.07663.3152

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 64.836 O1 C2 H4 133.285
O1 C3 C2 64.836 O1 C3 H5 133.285
C2 O1 C3 50.329 C2 C3 H5 161.880
C3 C2 H4 161.880
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.502      
2 C 0.720      
3 C 0.720      
4 H -0.469      
5 H -0.469      


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 -2.399 2.399
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.850 0.000 0.000
y 0.000 -11.575 0.000
z 0.000 0.000 -19.133
Traceless
 xyz
x -3.496 0.000 0.000
y 0.000 7.416 0.000
z 0.000 0.000 -3.920
Polar
3z2-r2-7.841
x2-y2-7.275
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.255 0.000 0.000
y 0.000 4.959 0.000
z 0.000 0.000 4.122


<r2> (average value of r2) Å2
<r2> 30.785
(<r2>)1/2 5.548