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

using model chemistry: B1B95/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 B1B95/Def2TZVPP
 hartrees
Energy at 0K-153.786263
Energy at 298.15K 
HF Energy-153.786263
Nuclear repulsion energy75.875754
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 B1B95/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 3122 3122 14.61 236.38 0.08 0.14
2 A1 1548 1548 3.72 1.97 0.39 0.57
3 A1 1329 1329 15.63 28.73 0.14 0.24
4 A1 1162 1162 0.17 0.93 0.35 0.52
5 A1 931 931 67.49 9.77 0.71 0.83
6 A2 3201 3201 0.00 111.88 0.75 0.86
7 A2 1173 1173 0.00 1.41 0.75 0.86
8 A2 1056 1056 0.00 0.07 0.75 0.86
9 B1 3216 3216 43.03 18.45 0.75 0.86
10 B1 1181 1181 3.93 7.16 0.75 0.86
11 B1 819 819 0.04 4.65 0.75 0.86
12 B2 3114 3114 38.11 10.63 0.75 0.86
13 B2 1504 1504 0.03 5.04 0.75 0.86
14 B2 1163 1163 0.96 1.53 0.75 0.86
15 B2 905 905 12.31 3.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12711.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12711.8 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 B1B95/Def2TZVPP
ABC
0.87456 0.74854 0.48138

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.844
C2 0.000 0.728 -0.367
C3 0.000 -0.728 -0.367
H4 0.917 1.261 -0.587
H5 -0.917 1.261 -0.587
H6 -0.917 -1.261 -0.587
H7 0.917 -1.261 -0.587

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41301.41302.11562.11562.11562.1156
C21.41301.45641.08271.08272.20092.2009
C31.41301.45642.20092.20091.08271.0827
H42.11561.08272.20091.83363.11742.5212
H52.11561.08272.20091.83362.52123.1174
H62.11562.20091.08273.11742.52121.8336
H72.11562.20091.08272.52123.11741.8336

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 58.978 O1 C2 H4 115.291
O1 C2 H5 115.291 O1 C3 C2 58.978
O1 C3 H6 115.291 O1 C3 H7 115.291
C2 O1 C3 62.043 C2 C3 H6 119.456
C2 C3 H7 119.456 C3 C2 H4 119.456
C3 C2 H5 119.456 H4 C2 H5 115.729
H6 C3 H7 115.729
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.320      
2 C -0.010      
3 C -0.010      
4 H 0.085      
5 H 0.085      
6 H 0.085      
7 H 0.085      


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 -1.852 1.852
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.279 0.000 0.000
y 0.000 -16.435 0.000
z 0.000 0.000 -20.620
Traceless
 xyz
x 1.248 0.000 0.000
y 0.000 2.515 0.000
z 0.000 0.000 -3.763
Polar
3z2-r2-7.526
x2-y2-0.845
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.688 0.000 0.000
y 0.000 4.650 0.000
z 0.000 0.000 3.464


<r2> (average value of r2) Å2
<r2> 36.083
(<r2>)1/2 6.007