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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-153.625742
Energy at 298.15K 
HF Energy-153.625742
Nuclear repulsion energy74.441936
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 PBEPBEultrafine/aug-cc-pVDZ
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 3026 3007 19.36 271.95 0.06 0.12
2 A1 1474 1465 2.55 3.01 0.32 0.49
3 A1 1269 1261 13.78 30.19 0.12 0.21
4 A1 1093 1087 0.36 2.63 0.23 0.37
5 A1 874 869 65.63 8.71 0.74 0.85
6 A2 3108 3089 0.00 128.60 0.75 0.86
7 A2 1119 1113 0.00 0.76 0.75 0.86
8 A2 997 991 0.00 0.04 0.75 0.86
9 B1 3123 3104 45.50 30.51 0.75 0.86
10 B1 1114 1107 2.20 3.78 0.75 0.86
11 B1 783 779 0.07 4.31 0.75 0.86
12 B2 3020 3001 37.60 12.71 0.75 0.86
13 B2 1435 1427 0.18 3.74 0.75 0.86
14 B2 1098 1091 0.28 0.47 0.75 0.86
15 B2 818 813 11.07 2.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12174.7 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 12100.4 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
0.83416 0.72692 0.46340

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.865
C2 0.000 0.738 -0.378
C3 0.000 -0.738 -0.378
H4 0.933 1.281 -0.596
H5 -0.933 1.281 -0.596
H6 -0.933 -1.281 -0.596
H7 0.933 -1.281 -0.596

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.44531.44532.15542.15542.15542.1554
C21.44531.47591.10131.10132.23452.2345
C31.44531.47592.23452.23451.10131.1013
H42.15541.10132.23451.86643.16892.5610
H52.15541.10132.23451.86642.56103.1689
H62.15542.23451.10133.16892.56101.8664
H72.15542.23451.10132.56103.16891.8664

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 59.298 O1 C2 H4 114.969
O1 C2 H5 114.969 O1 C3 C2 59.298
O1 C3 H6 114.969 O1 C3 H7 114.969
C2 O1 C3 61.404 C2 C3 H6 119.514
C2 C3 H7 119.514 C3 C2 H4 119.514
C3 C2 H5 119.514 H4 C2 H5 115.841
H6 C3 H7 115.841
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.523      
2 C 1.154      
3 C 1.154      
4 H -0.446      
5 H -0.446      
6 H -0.446      
7 H -0.446      


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 -1.792 1.792
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.705 0.000 0.000
y 0.000 -16.840 0.000
z 0.000 0.000 -21.132
Traceless
 xyz
x 1.281 0.000 0.000
y 0.000 2.578 0.000
z 0.000 0.000 -3.859
Polar
3z2-r2-7.719
x2-y2-0.864
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.181 0.000 0.000
y 0.000 5.095 0.000
z 0.000 0.000 4.183


<r2> (average value of r2) Å2
<r2> 37.289
(<r2>)1/2 6.106