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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: B97D3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B97D3/6-31+G**
 hartrees
Energy at 0K-152.390450
Energy at 298.15K 
HF Energy-152.390450
Nuclear repulsion energy60.907408
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 B97D3/6-31+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 A1 3359 3302 1.56 95.92 0.22 0.36
2 A1 1792 1761 2.77 86.50 0.11 0.20
3 A1 1043 1025 10.67 8.05 0.73 0.84
4 A1 857 842 61.25 8.49 0.75 0.86
5 A2 548 539 0.00 8.26 0.75 0.86
6 B1 504 496 96.95 0.03 0.75 0.86
7 B2 3289 3233 38.82 18.65 0.75 0.86
8 B2 918 902 6.88 2.33 0.75 0.86
9 B2 315i 310i 4.94 24.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5998.0 cm-1
Scaled (by 0.9828) Zero Point Vibrational Energy (zpe) 5894.8 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 B97D3/6-31+G**
ABC
1.09608 0.86768 0.48430

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.900
C2 0.000 0.639 -0.467
C3 0.000 -0.639 -0.467
H4 0.000 1.664 -0.796
H5 0.000 -1.664 -0.796

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.50961.50962.37682.3768
C21.50961.27781.07702.3266
C31.50961.27782.32661.0770
H42.37681.07702.32663.3287
H52.37682.32661.07703.3287

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 132.827
O1 C3 C2 64.962 O1 C3 H5 132.827
C2 O1 C3 50.075 C2 C3 H5 162.211
C3 C2 H4 162.211
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.360      
2 C -0.008      
3 C -0.008      
4 H 0.188      
5 H 0.188      


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 -2.580 2.580
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.008 0.000 0.000
y 0.000 -11.760 0.000
z 0.000 0.000 -19.171
Traceless
 xyz
x -3.542 0.000 0.000
y 0.000 7.329 0.000
z 0.000 0.000 -3.787
Polar
3z2-r2-7.574
x2-y2-7.248
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.705 0.000 0.000
y 0.000 4.812 0.000
z 0.000 0.000 3.630


<r2> (average value of r2) Å2
<r2> 31.211
(<r2>)1/2 5.587