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All results from a given calculation for C2H4O (Ethylene oxide)

using model chemistry: B3PW91/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/TZVP
 hartrees
Energy at 0K-153.786368
Energy at 298.15K 
HF Energy-153.786368
Nuclear repulsion energy75.464490
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 B3PW91/TZVP
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 3097 2987 14.32 232.34 0.09 0.16
2 A1 1542 1487 3.58 1.94 0.62 0.76
3 A1 1311 1264 14.40 28.27 0.14 0.24
4 A1 1150 1109 0.02 1.14 0.42 0.59
5 A1 908 875 72.70 11.48 0.74 0.85
6 A2 3174 3061 0.00 113.09 0.75 0.86
7 A2 1174 1132 0.00 1.71 0.75 0.86
8 A2 1044 1007 0.00 0.07 0.75 0.86
9 B1 3189 3075 47.10 19.75 0.75 0.86
10 B1 1172 1130 3.46 9.10 0.75 0.86
11 B1 821 792 0.02 6.43 0.75 0.86
12 B2 3090 2980 37.38 11.92 0.75 0.86
13 B2 1503 1450 0.02 6.41 0.75 0.86
14 B2 1144 1104 3.78 3.14 0.75 0.86
15 B2 872 841 13.04 3.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12595.7 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 12146.0 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 B3PW91/TZVP
ABC
0.86293 0.74234 0.47591

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.850
C2 0.000 0.731 -0.370
C3 0.000 -0.731 -0.370
H4 0.920 1.267 -0.591
H5 -0.920 1.267 -0.591
H6 -0.920 -1.267 -0.591
H7 0.920 -1.267 -0.591

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42211.42212.12802.12802.12802.1280
C21.42211.46211.08731.08732.21072.2107
C31.42211.46212.21072.21071.08731.0873
H42.12801.08732.21071.83983.13132.5338
H52.12801.08732.21071.83982.53383.1313
H62.12802.21071.08733.13132.53381.8398
H72.12802.21071.08732.53383.13131.8398

picture of Ethylene oxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 59.065 O1 C2 H4 115.340
O1 C2 H5 115.340 O1 C3 C2 59.065
O1 C3 H6 115.340 O1 C3 H7 115.340
C2 O1 C3 61.870 C2 C3 H6 119.525
C2 C3 H7 119.525 C3 C2 H4 119.525
C3 C2 H5 119.525 H4 C2 H5 115.555
H6 C3 H7 115.555
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.255      
2 C -0.124      
3 C -0.124      
4 H 0.126      
5 H 0.126      
6 H 0.126      
7 H 0.126      


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 -2.018 2.018
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.276 0.000 0.000
y 0.000 -16.386 0.000
z 0.000 0.000 -20.812
Traceless
 xyz
x 1.322 0.000 0.000
y 0.000 2.658 0.000
z 0.000 0.000 -3.981
Polar
3z2-r2-7.962
x2-y2-0.891
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.589 0.000 0.000
y 0.000 4.581 0.000
z 0.000 0.000 3.264


<r2> (average value of r2) Å2
<r2> 36.379
(<r2>)1/2 6.032