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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: M06-2X/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 M06-2X/daug-cc-pVDZ
 hartrees
Energy at 0K-152.437155
Energy at 298.15K 
HF Energy-152.437155
Nuclear repulsion energy61.593297
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/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 3433 3433 4.06 88.38 0.18 0.31
2 A1 1860 1860 2.57 95.49 0.08 0.15
3 A1 1098 1098 19.81 6.70 0.67 0.80
4 A1 911 911 59.21 4.98 0.75 0.85
5 A2 664 664 0.00 4.10 0.75 0.86
6 B1 561 561 87.82 0.00 0.75 0.86
7 B2 3357 3357 70.98 15.93 0.75 0.86
8 B2 968 968 5.83 2.08 0.75 0.86
9 B2 372 372 1.90 14.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6612.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6612.0 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/daug-cc-pVDZ
ABC
1.10633 0.89965 0.49617

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.884
C2 0.000 0.635 -0.458
C3 0.000 -0.635 -0.458
H4 0.000 1.660 -0.787
H5 0.000 -1.660 -0.787

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.48521.48522.35562.3556
C21.48521.27051.07602.3184
C31.48521.27052.31841.0760
H42.35561.07602.31843.3193
H52.35562.31841.07603.3193

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 64.677 O1 C2 H4 133.132
O1 C3 C2 64.677 O1 C3 H5 133.132
C2 O1 C3 50.646 C2 C3 H5 162.191
C3 C2 H4 162.191
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.383      
2 C 0.749      
3 C 0.749      
4 H -0.558      
5 H -0.558      


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 -2.332 2.332
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.919 0.000 0.000
y 0.000 -11.655 0.000
z 0.000 0.000 -19.210
Traceless
 xyz
x -3.487 0.000 0.000
y 0.000 7.410 0.000
z 0.000 0.000 -3.923
Polar
3z2-r2-7.846
x2-y2-7.264
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.117 0.000 0.000
y 0.000 4.942 0.000
z 0.000 0.000 3.986


<r2> (average value of r2) Å2
<r2> 30.731
(<r2>)1/2 5.544