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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: BLYP/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 BLYP/daug-cc-pVDZ
 hartrees
Energy at 0K-152.461691
Energy at 298.15K 
HF Energy-152.461691
Nuclear repulsion energy60.253461
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/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 3316 3316 2.44 103.25 0.18 0.31
2 A1 1762 1762 3.64 94.05 0.08 0.15
3 A1 999 999 7.91 4.40 0.64 0.78
4 A1 830 830 59.29 6.76 0.74 0.85
5 A2 551 551 0.00 3.87 0.75 0.86
6 B1 483 483 81.47 0.01 0.75 0.86
7 B2 3243 3243 45.31 20.52 0.75 0.86
8 B2 904 904 8.43 3.06 0.75 0.86
9 B2 317i 317i 2.57 19.91 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5884.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5884.9 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/daug-cc-pVDZ
ABC
1.08861 0.83648 0.47302

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.917
C2 0.000 0.641 -0.475
C3 0.000 -0.641 -0.475
H4 0.000 1.669 -0.818
H5 0.000 -1.669 -0.818

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.53271.53272.40732.4073
C21.53271.28271.08322.3355
C31.53271.28272.33551.0832
H42.40731.08322.33553.3377
H52.40732.33551.08323.3377

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 65.264 O1 C2 H4 133.193
O1 C3 C2 65.264 O1 C3 H5 133.193
C2 O1 C3 49.473 C2 C3 H5 161.543
C3 C2 H4 161.543
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.406      
2 C 0.996      
3 C 0.996      
4 H -0.793      
5 H -0.793      


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 -2.407 2.407
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.155 0.000 0.000
y 0.000 -12.201 0.000
z 0.000 0.000 -19.431
Traceless
 xyz
x -3.339 0.000 0.000
y 0.000 7.091 0.000
z 0.000 0.000 -3.752
Polar
3z2-r2-7.505
x2-y2-6.953
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.495 0.000 0.000
y 0.000 5.247 0.000
z 0.000 0.000 4.542


<r2> (average value of r2) Å2
<r2> 31.853
(<r2>)1/2 5.644