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

using model chemistry: B1B95/CEP-31G*

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/CEP-31G*
 hartrees
Energy at 0K-29.592980
Energy at 298.15K-29.597645
Nuclear repulsion energy42.222084
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/CEP-31G*
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 3131 2997 20.95      
2 A1 1547 1481 5.09      
3 A1 1320 1263 12.58      
4 A1 1153 1104 0.17      
5 A1 930 890 79.29      
6 A2 3206 3069 0.00      
7 A2 1144 1095 0.00      
8 A2 1032 987 0.00      
9 B1 3224 3086 79.87      
10 B1 1160 1110 2.63      
11 B1 801 767 0.59      
12 B2 3121 2987 52.96      
13 B2 1487 1424 0.09      
14 B2 1123 1075 2.08      
15 B2 918 879 11.91      

Unscaled Zero Point Vibrational Energy (zpe) 12647.8 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 12106.5 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/CEP-31G*
ABC
0.86178 0.71988 0.46797

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.849
C2 0.000 0.744 -0.369
C3 0.000 -0.744 -0.369
H4 0.929 1.285 -0.590
H5 -0.929 1.285 -0.590
H6 -0.929 -1.285 -0.590
H7 0.929 -1.285 -0.590

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42761.42762.14112.14112.14112.1411
C21.42761.48791.09731.09732.24232.2423
C31.42761.48792.24232.24231.09731.0973
H42.14111.09732.24231.85763.17112.5700
H52.14111.09732.24231.85762.57003.1711
H62.14112.24231.09733.17112.57001.8576
H72.14112.24231.09732.57003.17111.8576

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 58.593 O1 C2 H4 115.367
O1 C2 H5 115.367 O1 C3 C2 58.593
O1 C3 H6 115.367 O1 C3 H7 115.367
C2 O1 C3 62.815 C2 C3 H6 119.543
C2 C3 H7 119.543 C3 C2 H4 119.543
C3 C2 H5 119.543 H4 C2 H5 115.661
H6 C3 H7 115.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.186      
2 C -0.265      
3 C -0.265      
4 H 0.179      
5 H 0.179      
6 H 0.179      
7 H 0.179      


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 -2.054 2.054
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.723 0.000 0.000
y 0.000 -15.993 0.000
z 0.000 0.000 -20.442
Traceless
 xyz
x 1.494 0.000 0.000
y 0.000 2.589 0.000
z 0.000 0.000 -4.083
Polar
3z2-r2-8.167
x2-y2-0.730
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.901 0.000 0.000
y 0.000 4.226 0.000
z 0.000 0.000 2.755


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