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

using model chemistry: HSEh1PBE/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 HSEh1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-153.685660
Energy at 298.15K 
HF Energy-153.685660
Nuclear repulsion energy75.680306
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/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 2991 16.40 247.46 0.06 0.11
2 A1 1542 1483 3.06 2.60 0.24 0.38
3 A1 1324 1273 16.70 30.37 0.11 0.21
4 A1 1157 1113 0.01 2.40 0.26 0.41
5 A1 925 890 72.18 7.72 0.70 0.82
6 A2 3186 3065 0.00 109.38 0.75 0.86
7 A2 1174 1129 0.00 0.73 0.75 0.86
8 A2 1054 1014 0.00 0.03 0.75 0.86
9 B1 3201 3079 37.42 21.71 0.75 0.86
10 B1 1178 1133 4.13 3.38 0.75 0.86
11 B1 819 787 0.25 2.78 0.75 0.86
12 B2 3102 2984 34.48 9.90 0.75 0.86
13 B2 1499 1442 0.36 3.38 0.75 0.86
14 B2 1166 1122 0.30 0.24 0.75 0.86
15 B2 894 859 11.18 3.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12665.8 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 12182.0 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 HSEh1PBE/aug-cc-pVTZ
ABC
0.86830 0.74617 0.47902

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.847
C2 0.000 0.729 -0.369
C3 0.000 -0.729 -0.369
H4 0.919 1.263 -0.588
H5 -0.919 1.263 -0.588
H6 -0.919 -1.263 -0.588
H7 0.919 -1.263 -0.588

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41761.41762.12102.12102.12102.1210
C21.41761.45781.08561.08562.20492.2049
C31.41761.45782.20492.20491.08561.0856
H42.12101.08562.20491.83873.12472.5265
H52.12101.08562.20491.83872.52653.1247
H62.12102.20491.08563.12472.52651.8387
H72.12102.20491.08562.52653.12471.8387

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 59.055 O1 C2 H4 115.206
O1 C2 H5 115.206 O1 C3 C2 59.055
O1 C3 H6 115.206 O1 C3 H7 115.206
C2 O1 C3 61.889 C2 C3 H6 119.484
C2 C3 H7 119.484 C3 C2 H4 119.484
C3 C2 H5 119.484 H4 C2 H5 115.744
H6 C3 H7 115.744
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.538      
2 C -0.324      
3 C -0.324      
4 H 0.297      
5 H 0.297      
6 H 0.297      
7 H 0.297      


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 -1.839 1.839
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.366 0.000 0.000
y 0.000 -16.485 0.000
z 0.000 0.000 -20.898
Traceless
 xyz
x 1.325 0.000 0.000
y 0.000 2.647 0.000
z 0.000 0.000 -3.973
Polar
3z2-r2-7.945
x2-y2-0.881
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 3.923


<r2> (average value of r2) Å2
<r2> 36.290
(<r2>)1/2 6.024