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

using model chemistry: PBEPBEultrafine/aug-cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-153.665104
Energy at 298.15K 
HF Energy-153.665104
Nuclear repulsion energy74.847735
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-pVTZ
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 3017 2983 18.87 271.59 0.06 0.11
2 A1 1482 1465 2.67 2.50 0.43 0.60
3 A1 1269 1254 14.46 29.93 0.11 0.20
4 A1 1100 1088 0.15 2.52 0.22 0.35
5 A1 879 869 65.43 7.99 0.73 0.84
6 A2 3089 3054 0.00 124.87 0.75 0.86
7 A2 1133 1120 0.00 0.76 0.75 0.86
8 A2 1010 999 0.00 0.03 0.75 0.86
9 B1 3104 3069 44.12 29.41 0.75 0.86
10 B1 1128 1115 2.63 3.67 0.75 0.86
11 B1 791 782 0.10 3.85 0.75 0.86
12 B2 3011 2977 37.76 12.35 0.75 0.86
13 B2 1449 1433 0.14 3.90 0.75 0.86
14 B2 1113 1101 0.45 0.36 0.75 0.86
15 B2 828 819 11.44 2.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12200.8 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 12064.2 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-pVTZ
ABC
0.84353 0.73460 0.46813

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.860
C2 0.000 0.735 -0.375
C3 0.000 -0.735 -0.375
H4 0.927 1.273 -0.595
H5 -0.927 1.273 -0.595
H6 -0.927 -1.273 -0.595
H7 0.927 -1.273 -0.595

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43761.43762.14432.14432.14432.1443
C21.43761.46951.09391.09392.22202.2220
C31.43761.46952.22202.22201.09391.0939
H42.14431.09392.22201.85323.14882.5456
H52.14431.09392.22201.85322.54563.1488
H62.14432.22201.09393.14882.54561.8532
H72.14432.22201.09392.54563.14881.8532

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 59.263 O1 C2 H4 115.116
O1 C2 H5 115.116 O1 C3 C2 59.263
O1 C3 H6 115.116 O1 C3 H7 115.116
C2 O1 C3 61.473 C2 C3 H6 119.465
C2 C3 H7 119.465 C3 C2 H4 119.465
C3 C2 H5 119.465 H4 C2 H5 115.786
H6 C3 H7 115.786
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.495      
2 C -0.302      
3 C -0.302      
4 H 0.274      
5 H 0.274      
6 H 0.274      
7 H 0.274      


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 -1.776 1.776
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.645 0.000 0.000
y 0.000 -16.766 0.000
z 0.000 0.000 -21.059
Traceless
 xyz
x 1.268 0.000 0.000
y 0.000 2.586 0.000
z 0.000 0.000 -3.853
Polar
3z2-r2-7.707
x2-y2-0.879
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.190 0.000 0.000
y 0.000 5.058 0.000
z 0.000 0.000 4.190


<r2> (average value of r2) Å2
<r2> 36.971
(<r2>)1/2 6.080