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

using model chemistry: HSEh1PBE/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 HSEh1PBE/cc-pVDZ
 hartrees
Energy at 0K-153.631544
Energy at 298.15K 
HF Energy-153.631544
Nuclear repulsion energy75.397108
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/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 3108 2989 10.61 231.07 0.09 0.17
2 A1 1534 1476 5.00 2.16 0.46 0.63
3 A1 1328 1277 13.87 26.47 0.20 0.34
4 A1 1151 1107 0.47 0.86 0.63 0.77
5 A1 928 892 62.57 10.97 0.72 0.84
6 A2 3190 3068 0.00 125.84 0.75 0.86
7 A2 1160 1116 0.00 3.65 0.75 0.86
8 A2 1035 996 0.00 0.11 0.75 0.86
9 B1 3205 3083 51.78 18.31 0.75 0.86
10 B1 1166 1121 3.46 12.53 0.75 0.86
11 B1 813 782 0.00 7.23 0.75 0.86
12 B2 3097 2979 35.69 10.20 0.75 0.86
13 B2 1476 1420 0.04 6.68 0.75 0.86
14 B2 1133 1090 0.98 2.21 0.75 0.86
15 B2 898 864 11.89 3.95 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12610.8 cm-1
Scaled (by 0.9619) Zero Point Vibrational Energy (zpe) 12130.3 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/cc-pVDZ
ABC
0.86483 0.73817 0.47618

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.848
C2 0.000 0.732 -0.367
C3 0.000 -0.732 -0.367
H4 0.927 1.271 -0.595
H5 -0.927 1.271 -0.595
H6 -0.927 -1.271 -0.595
H7 0.927 -1.271 -0.595

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41821.41822.13462.13462.13462.1346
C21.41821.46391.09641.09642.21902.2190
C31.41821.46392.21902.21901.09641.0964
H42.13461.09642.21901.85393.14662.5425
H52.13461.09642.21901.85392.54253.1466
H62.13462.21901.09643.14662.54251.8539
H72.13462.21901.09642.54253.14661.8539

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 58.929 O1 C2 H4 115.585
O1 C2 H5 115.585 O1 C3 C2 58.929
O1 C3 H6 115.585 O1 C3 H7 115.585
C2 O1 C3 62.143 C2 C3 H6 119.465
C2 C3 H7 119.465 C3 C2 H4 119.465
C3 C2 H5 119.465 H4 C2 H5 115.451
H6 C3 H7 115.451
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.283      
2 C 0.040      
3 C 0.040      
4 H 0.051      
5 H 0.051      
6 H 0.051      
7 H 0.051      


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 -1.797 1.797
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.159 0.000 0.000
y 0.000 -16.487 0.000
z 0.000 0.000 -20.232
Traceless
 xyz
x 1.200 0.000 0.000
y 0.000 2.209 0.000
z 0.000 0.000 -3.409
Polar
3z2-r2-6.818
x2-y2-0.673
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.372 0.000 0.000
y 0.000 4.316 0.000
z 0.000 0.000 2.784


<r2> (average value of r2) Å2
<r2> 36.329
(<r2>)1/2 6.027