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

using model chemistry: B97D3/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B97D3/3-21G
 hartrees
Energy at 0K-152.836531
Energy at 298.15K 
HF Energy-152.836531
Nuclear repulsion energy72.688552
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 B97D3/3-21G
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 3065 3013 6.87 181.70 0.09 0.17
2 A1 1539 1513 0.21 7.64 0.70 0.83
3 A1 1193 1173 6.36 17.41 0.12 0.22
4 A1 1094 1075 7.38 5.39 0.44 0.61
5 A1 813 799 25.57 10.36 0.74 0.85
6 A2 3138 3084 0.00 106.38 0.75 0.86
7 A2 1170 1150 0.00 6.60 0.75 0.86
8 A2 966 950 0.00 0.00 0.75 0.86
9 B1 3159 3105 64.30 16.06 0.75 0.86
10 B1 1083 1064 0.15 19.87 0.75 0.86
11 B1 822 808 0.18 13.33 0.75 0.86
12 B2 3055 3003 34.61 9.37 0.75 0.86
13 B2 1522 1496 0.22 6.95 0.75 0.86
14 B2 1088 1069 16.04 3.84 0.75 0.86
15 B2 745 732 8.59 5.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12224.5 cm-1
Scaled (by 0.983) Zero Point Vibrational Energy (zpe) 12016.6 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 B97D3/3-21G
ABC
0.76255 0.72018 0.43667

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.914
C2 0.000 0.747 -0.398
C3 0.000 -0.747 -0.398
H4 0.926 1.275 -0.633
H5 -0.926 1.275 -0.633
H6 -0.926 -1.275 -0.633
H7 0.926 -1.275 -0.633

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.51031.51032.20872.20872.20872.2087
C21.51031.49421.09141.09142.23662.2366
C31.51031.49422.23662.23661.09141.0914
H42.20871.09142.23661.85153.15182.5507
H52.20871.09142.23661.85152.55073.1518
H62.20872.23661.09143.15182.55071.8515
H72.20872.23661.09142.55073.15181.8515

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 60.353 O1 C2 H4 115.246
O1 C2 H5 115.246 O1 C3 C2 60.353
O1 C3 H6 115.246 O1 C3 H7 115.246
C2 O1 C3 59.295 C2 C3 H6 118.946
C2 C3 H7 118.946 C3 C2 H4 118.946
C3 C2 H5 118.946 H4 C2 H5 116.030
H6 C3 H7 116.030
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.410      
2 C -0.223      
3 C -0.223      
4 H 0.214      
5 H 0.214      
6 H 0.214      
7 H 0.214      


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 -2.224 2.224
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.192 0.000 0.000
y 0.000 -16.359 0.000
z 0.000 0.000 -20.534
Traceless
 xyz
x 1.254 0.000 0.000
y 0.000 2.504 0.000
z 0.000 0.000 -3.758
Polar
3z2-r2-7.516
x2-y2-0.833
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.018 0.000 0.000
y 0.000 4.110 0.000
z 0.000 0.000 2.578


<r2> (average value of r2) Å2
<r2> 38.088
(<r2>)1/2 6.172