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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: M06-2X/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at M06-2X/Def2TZVPP
 hartrees
Energy at 0K-152.475909
Energy at 298.15K 
HF Energy-152.475909
Nuclear repulsion energy62.004753
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 M06-2X/Def2TZVPP
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 3432 3432 2.94 86.55 0.18 0.31
2 A1 1862 1862 2.12 76.50 0.13 0.23
3 A1 1113 1113 17.56 7.45 0.51 0.68
4 A1 923 923 57.76 6.17 0.70 0.82
5 A2 722 722 0.00 3.50 0.75 0.86
6 B1 590 590 88.40 0.16 0.75 0.86
7 B2 3358 3358 56.77 16.42 0.75 0.86
8 B2 987 987 6.10 2.11 0.75 0.86
9 B2 396 396 2.50 12.90 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6691.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6691.2 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 M06-2X/Def2TZVPP
ABC
1.12506 0.90859 0.50265

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.880
C2 0.000 0.629 -0.456
C3 0.000 -0.629 -0.456
H4 0.000 1.648 -0.782
H5 0.000 -1.648 -0.782

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.47691.47692.34052.3405
C21.47691.25891.06932.3006
C31.47691.25892.30061.0693
H42.34051.06932.30063.2959
H52.34052.30061.06933.2959

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 64.773 O1 C2 H4 132.966
O1 C3 C2 64.773 O1 C3 H5 132.966
C2 O1 C3 50.453 C2 C3 H5 162.260
C3 C2 H4 162.260
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.362      
2 C -0.077      
3 C -0.077      
4 H 0.258      
5 H 0.258      


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 -2.380 2.380
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.637 0.000 0.000
y 0.000 -11.682 0.000
z 0.000 0.000 -18.886
Traceless
 xyz
x -3.353 0.000 0.000
y 0.000 7.079 0.000
z 0.000 0.000 -3.726
Polar
3z2-r2-7.452
x2-y2-6.954
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.459 0.000 0.000
y 0.000 4.671 0.000
z 0.000 0.000 3.431


<r2> (average value of r2) Å2
<r2> 30.345
(<r2>)1/2 5.509