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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: BLYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-152.499663
Energy at 298.15K 
HF Energy-152.499663
Nuclear repulsion energy60.748507
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 BLYP/6-311+G(3df,2p)
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 3309 3291 2.55 93.63 0.19 0.32
2 A1 1767 1757 3.62 85.12 0.10 0.18
3 A1 1014 1008 6.41 5.75 0.56 0.72
4 A1 840 836 59.41 7.45 0.74 0.85
5 A2 620 617 0.00 5.41 0.75 0.86
6 B1 518 515 84.46 0.12 0.75 0.86
7 B2 3239 3221 43.80 19.05 0.75 0.86
8 B2 924 919 8.61 2.42 0.75 0.86
9 B2 302i 301i 3.01 18.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5964.3 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 5931.5 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 BLYP/6-311+G(3df,2p)
ABC
1.10905 0.84845 0.48070

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.911
C2 0.000 0.635 -0.472
C3 0.000 -0.635 -0.472
H4 0.000 1.655 -0.811
H5 0.000 -1.655 -0.811

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.52121.52122.38832.3883
C21.52121.27001.07532.3153
C31.52121.27002.31531.0753
H42.38831.07532.31533.3107
H52.38832.31531.07533.3107

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 65.328 O1 C2 H4 133.065
O1 C3 C2 65.328 O1 C3 H5 133.065
C2 O1 C3 49.343 C2 C3 H5 161.607
C3 C2 H4 161.607
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.529      
2 C 0.027      
3 C 0.027      
4 H 0.237      
5 H 0.237      


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 -2.420 2.420
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.052 0.000 0.000
y 0.000 -12.138 0.000
z 0.000 0.000 -19.299
Traceless
 xyz
x -3.333 0.000 0.000
y 0.000 7.037 0.000
z 0.000 0.000 -3.704
Polar
3z2-r2-7.409
x2-y2-6.913
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.172 0.000 0.000
y 0.000 4.974 0.000
z 0.000 0.000 4.194


<r2> (average value of r2) Å2
<r2> 31.450
(<r2>)1/2 5.608