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

using model chemistry: HF/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-152.811985
Energy at 298.15K 
HF Energy-152.811985
Nuclear repulsion energy74.428650
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 HF/LANL2DZ
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 3356 3020 8.60 213.95 0.09 0.16
2 A1 1672 1504 0.48 5.57 0.27 0.43
3 A1 1377 1240 11.12 34.64 0.16 0.28
4 A1 1256 1130 0.14 15.87 0.15 0.26
5 A1 892 802 96.74 15.80 0.65 0.79
6 A2 3448 3103 0.00 93.73 0.75 0.86
7 A2 1297 1167 0.00 4.86 0.75 0.86
8 A2 1115 1003 0.00 0.00 0.75 0.86
9 B1 3464 3118 57.97 10.61 0.75 0.86
10 B1 1229 1106 5.31 13.63 0.75 0.86
11 B1 895 806 1.94 6.79 0.75 0.86
12 B2 3340 3006 43.78 9.50 0.75 0.86
13 B2 1640 1476 0.86 4.04 0.75 0.86
14 B2 1285 1157 5.65 0.54 0.75 0.86
15 B2 871 783 4.72 22.98 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13568.1 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 12209.9 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 HF/LANL2DZ
ABC
0.82185 0.73608 0.45829

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.877
C2 0.000 0.738 -0.387
C3 0.000 -0.738 -0.387
H4 0.907 1.270 -0.593
H5 -0.907 1.270 -0.593
H6 -0.907 -1.270 -0.593
H7 0.907 -1.270 -0.593

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.46411.46412.14422.14422.14422.1442
C21.46411.47651.07141.07142.21342.2134
C31.46411.47652.21342.21341.07141.0714
H42.14421.07142.21341.81373.12172.5408
H52.14421.07142.21341.81372.54083.1217
H62.14422.21341.07143.12172.54081.8137
H72.14422.21341.07142.54083.12171.8137

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 59.719 O1 C2 H4 114.603
O1 C2 H5 114.603 O1 C3 C2 59.719
O1 C3 H6 114.603 O1 C3 H7 114.603
C2 O1 C3 60.563 C2 C3 H6 119.779
C2 C3 H7 119.779 C3 C2 H4 119.779
C3 C2 H5 119.779 H4 C2 H5 115.649
H6 C3 H7 115.649
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.467      
2 C -0.153      
3 C -0.153      
4 H 0.193      
5 H 0.193      
6 H 0.193      
7 H 0.193      


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 -2.989 2.989
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.229 0.000 0.000
y 0.000 -15.993 0.000
z 0.000 0.000 -21.931
Traceless
 xyz
x 1.733 0.000 0.000
y 0.000 3.588 0.000
z 0.000 0.000 -5.320
Polar
3z2-r2-10.641
x2-y2-1.236
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.753 0.000 0.000
y 0.000 4.057 0.000
z 0.000 0.000 2.817


<r2> (average value of r2) Å2
<r2> 37.128
(<r2>)1/2 6.093