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

using model chemistry: B3LYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/Def2TZVPP
 hartrees
Energy at 0K-153.855498
Energy at 298.15K 
HF Energy-153.855498
Nuclear repulsion energy75.339174
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 B3LYP/Def2TZVPP
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 3092 2977 14.66 239.04 0.08 0.15
2 A1 1541 1483 2.74 1.89 0.64 0.78
3 A1 1300 1252 14.31 28.46 0.13 0.23
4 A1 1150 1107 0.03 1.90 0.27 0.43
5 A1 890 857 68.51 10.01 0.73 0.84
6 A2 3166 3048 0.00 114.99 0.75 0.86
7 A2 1176 1132 0.00 1.41 0.75 0.86
8 A2 1047 1008 0.00 0.05 0.75 0.86
9 B1 3182 3063 46.14 19.16 0.75 0.86
10 B1 1170 1127 3.49 7.38 0.75 0.86
11 B1 819 789 0.03 5.06 0.75 0.86
12 B2 3086 2970 40.42 11.02 0.75 0.86
13 B2 1507 1451 0.00 5.08 0.75 0.86
14 B2 1160 1117 1.38 1.60 0.75 0.86
15 B2 845 813 12.07 3.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12566.2 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 12096.3 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 B3LYP/Def2TZVPP
ABC
0.85724 0.74223 0.47371

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.854
C2 0.000 0.732 -0.372
C3 0.000 -0.732 -0.372
H4 0.918 1.267 -0.591
H5 -0.918 1.267 -0.591
H6 -0.918 -1.267 -0.591
H7 0.918 -1.267 -0.591

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42771.42772.12962.12962.12962.1296
C21.42771.46311.08481.08482.21012.2101
C31.42771.46312.21012.21011.08481.0848
H42.12961.08482.21011.83553.12912.5342
H52.12961.08482.21011.83552.53423.1291
H62.12962.21011.08483.12912.53421.8355
H72.12962.21011.08482.53423.12911.8355

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 59.177 O1 C2 H4 115.215
O1 C2 H5 115.215 O1 C3 C2 59.177
O1 C3 H6 115.215 O1 C3 H7 115.215
C2 O1 C3 61.646 C2 C3 H6 119.581
C2 C3 H7 119.581 C3 C2 H4 119.581
C3 C2 H5 119.581 H4 C2 H5 115.554
H6 C3 H7 115.554
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.353      
2 C -0.004      
3 C -0.004      
4 H 0.090      
5 H 0.090      
6 H 0.090      
7 H 0.090      


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 -1.918 1.918
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.510 0.000 0.000
y 0.000 -16.613 0.000
z 0.000 0.000 -20.855
Traceless
 xyz
x 1.224 0.000 0.000
y 0.000 2.570 0.000
z 0.000 0.000 -3.794
Polar
3z2-r2-7.587
x2-y2-0.897
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.733 0.000 0.000
y 0.000 4.723 0.000
z 0.000 0.000 3.545


<r2> (average value of r2) Å2
<r2> 36.551
(<r2>)1/2 6.046