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

using model chemistry: B1B95/TZVP

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/TZVP
 hartrees
Energy at 0K-153.775856
Energy at 298.15K 
HF Energy-153.775856
Nuclear repulsion energy75.777060
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/TZVP
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 3121 2987 13.94 232.56 0.09 0.16
2 A1 1551 1484 4.08 1.92 0.52 0.68
3 A1 1326 1269 15.17 28.69 0.14 0.25
4 A1 1160 1110 0.10 0.83 0.45 0.62
5 A1 925 885 72.41 11.60 0.73 0.84
6 A2 3200 3062 0.00 112.39 0.75 0.86
7 A2 1176 1126 0.00 1.74 0.75 0.86
8 A2 1052 1006 0.00 0.09 0.75 0.86
9 B1 3215 3077 46.13 19.22 0.75 0.86
10 B1 1181 1130 3.95 9.10 0.75 0.86
11 B1 823 788 0.01 6.19 0.75 0.86
12 B2 3114 2979 36.20 11.64 0.75 0.86
13 B2 1509 1444 0.01 6.35 0.75 0.86
14 B2 1151 1101 3.28 3.13 0.75 0.86
15 B2 898 860 13.01 3.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12700.4 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 12153.1 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/TZVP
ABC
0.87222 0.74667 0.48004

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.845
C2 0.000 0.729 -0.367
C3 0.000 -0.729 -0.367
H4 0.917 1.262 -0.588
H5 -0.917 1.262 -0.588
H6 -0.917 -1.262 -0.588
H7 0.917 -1.262 -0.588

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41481.41482.11882.11882.11882.1188
C21.41481.45831.08391.08392.20382.2038
C31.41481.45832.20382.20381.08391.0839
H42.11881.08392.20381.83503.12112.5247
H52.11881.08392.20381.83502.52473.1211
H62.11882.20381.08393.12112.52471.8350
H72.11882.20381.08392.52473.12111.8350

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 58.979 O1 C2 H4 115.345
O1 C2 H5 115.345 O1 C3 C2 58.979
O1 C3 H6 115.345 O1 C3 H7 115.345
C2 O1 C3 62.043 C2 C3 H6 119.467
C2 C3 H7 119.467 C3 C2 H4 119.467
C3 C2 H5 119.467 H4 C2 H5 115.661
H6 C3 H7 115.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.254      
2 C -0.119      
3 C -0.119      
4 H 0.123      
5 H 0.123      
6 H 0.123      
7 H 0.123      


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 -2.013 2.013
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.270 0.000 0.000
y 0.000 -16.386 0.000
z 0.000 0.000 -20.788
Traceless
 xyz
x 1.317 0.000 0.000
y 0.000 2.643 0.000
z 0.000 0.000 -3.960
Polar
3z2-r2-7.921
x2-y2-0.884
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.571 0.000 0.000
y 0.000 4.554 0.000
z 0.000 0.000 3.222


<r2> (average value of r2) Å2
<r2> 36.173
(<r2>)1/2 6.014