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

using model chemistry: HSEh1PBE/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HSEh1PBE/6-31G**
 hartrees
Energy at 0K-153.628802
Energy at 298.15K 
HF Energy-153.628802
Nuclear repulsion energy75.513697
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 HSEh1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3123 2980 12.05 198.03 0.09 0.17
2 A1 1566 1495 4.51 3.07 0.71 0.83
3 A1 1336 1275 13.61 24.29 0.18 0.30
4 A1 1171 1117 0.14 1.46 0.51 0.67
5 A1 935 893 60.02 11.80 0.74 0.85
6 A2 3200 3054 0.00 108.05 0.75 0.86
7 A2 1182 1128 0.00 4.71 0.75 0.86
8 A2 1051 1003 0.00 0.22 0.75 0.86
9 B1 3215 3068 54.42 15.42 0.75 0.86
10 B1 1181 1127 2.70 14.92 0.75 0.86
11 B1 822 785 0.06 8.75 0.75 0.86
12 B2 3113 2971 37.30 9.74 0.75 0.86
13 B2 1517 1448 0.35 6.93 0.75 0.86
14 B2 1150 1097 2.11 3.49 0.75 0.86
15 B2 908 867 13.36 4.25 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12734.7 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 12152.7 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 HSEh1PBE/6-31G**
ABC
0.86669 0.74125 0.47675

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.848
C2 0.000 0.731 -0.368
C3 0.000 -0.731 -0.368
H4 0.921 1.269 -0.593
H5 -0.921 1.269 -0.593
H6 -0.921 -1.269 -0.593
H7 0.921 -1.269 -0.593

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41851.41852.12932.12932.12932.1293
C21.41851.46261.08961.08962.21342.2134
C31.41851.46262.21342.21341.08961.0896
H42.12931.08962.21341.84123.13532.5378
H52.12931.08962.21341.84122.53783.1353
H62.12932.21341.08963.13532.53781.8412
H72.12932.21341.08962.53783.13531.8412

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 58.967 O1 C2 H4 115.570
O1 C2 H5 115.570 O1 C3 C2 58.967
O1 C3 H6 115.570 O1 C3 H7 115.570
C2 O1 C3 62.066 C2 C3 H6 119.563
C2 C3 H7 119.563 C3 C2 H4 119.563
C3 C2 H5 119.563 H4 C2 H5 115.313
H6 C3 H7 115.313
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.437      
2 C -0.055      
3 C -0.055      
4 H 0.137      
5 H 0.137      
6 H 0.137      
7 H 0.137      


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 -1.936 1.936
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.114 0.000 0.000
y 0.000 -16.232 0.000
z 0.000 0.000 -20.283
Traceless
 xyz
x 1.144 0.000 0.000
y 0.000 2.467 0.000
z 0.000 0.000 -3.610
Polar
3z2-r2-7.221
x2-y2-0.882
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.313 0.000 0.000
y 0.000 4.210 0.000
z 0.000 0.000 2.701


<r2> (average value of r2) Å2
<r2> 36.193
(<r2>)1/2 6.016