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

using model chemistry: PBE1PBE/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBE1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-153.672500
Energy at 298.15K 
HF Energy-153.672500
Nuclear repulsion energy75.685219
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 PBE1PBE/aug-cc-pVTZ
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 3110 2990 16.24 246.93 0.06 0.11
2 A1 1541 1482 3.15 2.66 0.22 0.36
3 A1 1325 1274 16.78 30.32 0.11 0.21
4 A1 1158 1113 0.01 2.27 0.27 0.43
5 A1 927 891 71.98 7.72 0.70 0.82
6 A2 3186 3064 0.00 108.82 0.75 0.86
7 A2 1173 1127 0.00 0.74 0.75 0.86
8 A2 1054 1013 0.00 0.03 0.75 0.86
9 B1 3201 3078 36.79 21.55 0.75 0.86
10 B1 1178 1132 4.16 3.38 0.75 0.86
11 B1 818 786 0.25 2.76 0.75 0.86
12 B2 3102 2983 33.98 9.81 0.75 0.86
13 B2 1498 1440 0.37 3.38 0.75 0.86
14 B2 1165 1120 0.29 0.24 0.75 0.86
15 B2 898 863 11.16 3.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12666.6 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 12179.0 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 PBE1PBE/aug-cc-pVTZ
ABC
0.86904 0.74573 0.47917

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.846
C2 0.000 0.729 -0.369
C3 0.000 -0.729 -0.369
H4 0.920 1.263 -0.587
H5 -0.920 1.263 -0.587
H6 -0.920 -1.263 -0.587
H7 0.920 -1.263 -0.587

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41701.41702.12092.12092.12092.1209
C21.41701.45831.08601.08602.20552.2055
C31.41701.45832.20552.20551.08601.0860
H42.12091.08602.20551.83973.12562.5268
H52.12091.08602.20551.83972.52683.1256
H62.12092.20551.08603.12562.52681.8397
H72.12092.20551.08602.52683.12561.8397

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 59.030 O1 C2 H4 115.207
O1 C2 H5 115.207 O1 C3 C2 59.030
O1 C3 H6 115.207 O1 C3 H7 115.207
C2 O1 C3 61.939 C2 C3 H6 119.467
C2 C3 H7 119.467 C3 C2 H4 119.467
C3 C2 H5 119.467 H4 C2 H5 115.775
H6 C3 H7 115.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.527      
2 C -0.366      
3 C -0.366      
4 H 0.315      
5 H 0.315      
6 H 0.315      
7 H 0.315      


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 -1.833 1.833
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.356 0.000 0.000
y 0.000 -16.478 0.000
z 0.000 0.000 -20.891
Traceless
 xyz
x 1.329 0.000 0.000
y 0.000 2.646 0.000
z 0.000 0.000 -3.974
Polar
3z2-r2-7.948
x2-y2-0.878
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.934 0.000 0.000
y 0.000 4.807 0.000
z 0.000 0.000 3.919


<r2> (average value of r2) Å2
<r2> 36.284
(<r2>)1/2 6.024