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

using model chemistry: PBEPBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-151.621524
Energy at 298.15K 
HF Energy-151.621524
Nuclear repulsion energy72.770054
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 PBEPBE/STO-3G
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 3240 2960 1.21 76.57 0.09 0.16
2 A1 1620 1480 0.40 13.68 0.73 0.84
3 A1 1341 1225 2.10 14.96 0.28 0.44
4 A1 1200 1097 5.09 1.76 0.30 0.47
5 A1 953 870 8.40 7.46 0.74 0.85
6 A2 3367 3076 0.00 53.97 0.75 0.86
7 A2 1179 1077 0.00 6.14 0.75 0.86
8 A2 1031 942 0.00 0.25 0.75 0.86
9 B1 3378 3086 9.47 9.74 0.75 0.86
10 B1 1140 1042 3.33 11.04 0.75 0.86
11 B1 845 772 0.00 4.31 0.75 0.86
12 B2 3230 2951 0.05 6.17 0.75 0.86
13 B2 1582 1445 0.24 6.12 0.75 0.86
14 B2 1148 1049 2.78 0.98 0.75 0.86
15 B2 1004 917 0.91 4.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13129.1 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 11994.7 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 PBEPBE/STO-3G
ABC
0.78852 0.70200 0.43932

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.896
C2 0.000 0.755 -0.383
C3 0.000 -0.755 -0.383
H4 0.933 1.301 -0.642
H5 -0.933 1.301 -0.642
H6 -0.933 -1.301 -0.642
H7 0.933 -1.301 -0.642

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.48491.48492.22022.22022.22022.2202
C21.48491.50991.11191.11192.27282.2728
C31.48491.50992.27282.27281.11191.1119
H42.22021.11192.27281.86633.20232.6023
H52.22021.11192.27281.86632.60233.2023
H62.22022.27281.11193.20232.60231.8663
H72.22022.27281.11192.60233.20231.8663

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 59.441 O1 C2 H4 116.787
O1 C2 H5 116.787 O1 C3 C2 59.441
O1 C3 H6 116.787 O1 C3 H7 116.787
C2 O1 C3 61.117 C2 C3 H6 119.420
C2 C3 H7 119.420 C3 C2 H4 119.420
C3 C2 H5 119.420 H4 C2 H5 114.113
H6 C3 H7 114.113
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.145      
2 C -0.101      
3 C -0.101      
4 H 0.087      
5 H 0.087      
6 H 0.087      
7 H 0.087      


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 -1.167 1.167
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.153 0.000 0.000
y 0.000 -15.848 0.000
z 0.000 0.000 -18.507
Traceless
 xyz
x 1.025 0.000 0.000
y 0.000 1.481 0.000
z 0.000 0.000 -2.506
Polar
3z2-r2-5.012
x2-y2-0.304
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.650 0.000 0.000
y 0.000 2.474 0.000
z 0.000 0.000 1.422


<r2> (average value of r2) Å2
<r2> 37.438
(<r2>)1/2 6.119