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

using model chemistry: B1B95/cc-pCVDZ

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/cc-pCVDZ
 hartrees
Energy at 0K-153.734328
Energy at 298.15K-153.739023
Nuclear repulsion energy75.485881
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/cc-pCVDZ
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 3107 3107 10.94      
2 A1 1531 1531 5.27      
3 A1 1326 1326 13.49      
4 A1 1148 1148 0.63      
5 A1 927 927 60.49      
6 A2 3189 3189 0.00      
7 A2 1154 1154 0.00      
8 A2 1033 1033 0.00      
9 B1 3204 3204 53.09      
10 B1 1162 1162 3.49      
11 B1 812 812 0.00      
12 B2 3096 3096 36.85      
13 B2 1473 1473 0.08      
14 B2 1130 1130 0.78      
15 B2 899 899 11.56      

Unscaled Zero Point Vibrational Energy (zpe) 12595.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12595.3 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 B1B95/cc-pCVDZ
ABC
0.86684 0.73992 0.47714

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.847
C2 0.000 0.731 -0.367
C3 0.000 -0.731 -0.367
H4 0.925 1.269 -0.594
H5 -0.925 1.269 -0.594
H6 -0.925 -1.269 -0.594
H7 0.925 -1.269 -0.594

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41691.41692.13182.13182.13182.1318
C21.41691.46281.09411.09412.21602.2160
C31.41691.46282.21602.21601.09411.0941
H42.13181.09412.21601.85013.14132.5387
H52.13181.09412.21601.85012.53873.1413
H62.13182.21601.09413.14132.53871.8501
H72.13182.21601.09412.53873.14131.8501

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 58.923 O1 C2 H4 115.606
O1 C2 H5 115.606 O1 C3 C2 58.923
O1 C3 H6 115.606 O1 C3 H7 115.606
C2 O1 C3 62.154 C2 C3 H6 119.451
C2 C3 H7 119.451 C3 C2 H4 119.451
C3 C2 H5 119.451 H4 C2 H5 115.451
H6 C3 H7 115.451
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pCVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.283      
2 C 0.066      
3 C 0.066      
4 H 0.038      
5 H 0.038      
6 H 0.038      
7 H 0.038      


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 -1.796 1.796
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.141 0.000 0.000
y 0.000 -16.482 0.000
z 0.000 0.000 -20.171
Traceless
 xyz
x 1.185 0.000 0.000
y 0.000 2.174 0.000
z 0.000 0.000 -3.359
Polar
3z2-r2-6.718
x2-y2-0.659
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.372 0.000 0.000
y 0.000 4.320 0.000
z 0.000 0.000 2.786


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000