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

using model chemistry: mPW1PW91/aug-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 mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-153.771631
Energy at 298.15K 
HF Energy-153.771631
Nuclear repulsion energy75.276961
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 mPW1PW91/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3127 2997 16.92 243.96 0.06 0.12
2 A1 1538 1473 2.82 3.21 0.17 0.29
3 A1 1323 1268 15.56 30.37 0.12 0.21
4 A1 1152 1104 0.00 2.62 0.24 0.39
5 A1 917 879 73.01 8.23 0.72 0.84
6 A2 3213 3079 0.00 110.53 0.75 0.86
7 A2 1164 1115 0.00 0.76 0.75 0.86
8 A2 1043 999 0.00 0.04 0.75 0.86
9 B1 3227 3093 39.20 21.80 0.75 0.86
10 B1 1165 1116 3.75 3.40 0.75 0.86
11 B1 814 780 0.22 2.93 0.75 0.86
12 B2 3119 2989 35.63 10.00 0.75 0.86
13 B2 1491 1428 0.37 3.20 0.75 0.86
14 B2 1153 1105 0.18 0.30 0.75 0.86
15 B2 879 842 10.65 3.60 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12661.8 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 12133.8 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 mPW1PW91/aug-cc-pVDZ
ABC
0.85839 0.73883 0.47409

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.852
C2 0.000 0.732 -0.372
C3 0.000 -0.732 -0.372
H4 0.925 1.270 -0.588
H5 -0.925 1.270 -0.588
H6 -0.925 -1.270 -0.588
H7 0.925 -1.270 -0.588

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42581.42582.13112.13112.13112.1311
C21.42581.46431.09161.09162.21612.2161
C31.42581.46432.21612.21611.09161.0916
H42.13111.09162.21611.84983.14222.5400
H52.13111.09162.21611.84982.54003.1422
H62.13112.21611.09163.14222.54001.8498
H72.13112.21611.09162.54003.14221.8498

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 59.101 O1 C2 H4 115.030
O1 C2 H5 115.030 O1 C3 C2 59.101
O1 C3 H6 115.030 O1 C3 H7 115.030
C2 O1 C3 61.797 C2 C3 H6 119.519
C2 C3 H7 119.519 C3 C2 H4 119.519
C3 C2 H5 119.519 H4 C2 H5 115.842
H6 C3 H7 115.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.587      
2 C 0.972      
3 C 0.972      
4 H -0.339      
5 H -0.339      
6 H -0.339      
7 H -0.339      


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 -1.881 1.881
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.368 0.000 0.000
y 0.000 -16.471 0.000
z 0.000 0.000 -20.942
Traceless
 xyz
x 1.338 0.000 0.000
y 0.000 2.685 0.000
z 0.000 0.000 -4.023
Polar
3z2-r2-8.045
x2-y2-0.898
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.902 0.000 0.000
y 0.000 4.817 0.000
z 0.000 0.000 3.914


<r2> (average value of r2) Å2
<r2> 36.556
(<r2>)1/2 6.046