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

using model chemistry: mPW1PW91/daug-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 mPW1PW91/daug-cc-pVDZ
 hartrees
Energy at 0K-153.772259
Energy at 298.15K 
HF Energy-153.772259
Nuclear repulsion energy75.289371
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 mPW1PW91/daug-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 3124 3124 17.13 248.04 0.06 0.12
2 A1 1536 1536 3.21 3.01 0.16 0.27
3 A1 1322 1322 14.98 31.12 0.11 0.21
4 A1 1145 1145 0.00 2.53 0.21 0.35
5 A1 916 916 73.20 7.83 0.71 0.83
6 A2 3212 3212 0.00 110.11 0.75 0.86
7 A2 1163 1163 0.00 0.79 0.75 0.86
8 A2 1044 1044 0.00 0.03 0.75 0.86
9 B1 3227 3227 39.83 21.44 0.75 0.86
10 B1 1165 1165 3.95 3.35 0.75 0.86
11 B1 812 812 0.24 2.84 0.75 0.86
12 B2 3117 3117 36.86 9.96 0.75 0.86
13 B2 1489 1489 0.27 3.22 0.75 0.86
14 B2 1149 1149 0.23 0.32 0.75 0.86
15 B2 879 879 11.24 3.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12649.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12649.8 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 mPW1PW91/daug-cc-pVDZ
ABC
0.85876 0.73897 0.47419

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.852
C2 0.000 0.732 -0.372
C3 0.000 -0.732 -0.372
H4 0.925 1.269 -0.588
H5 -0.925 1.269 -0.588
H6 -0.925 -1.269 -0.588
H7 0.925 -1.269 -0.588

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42561.42562.13072.13072.13072.1307
C21.42561.46461.09101.09102.21562.2156
C31.42561.46462.21562.21561.09101.0910
H42.13071.09102.21561.84913.14092.5388
H52.13071.09102.21561.84912.53883.1409
H62.13072.21561.09103.14092.53881.8491
H72.13072.21561.09102.53883.14091.8491

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 59.090 O1 C2 H4 115.054
O1 C2 H5 115.054 O1 C3 C2 59.090
O1 C3 H6 115.054 O1 C3 H7 115.054
C2 O1 C3 61.820 C2 C3 H6 119.492
C2 C3 H7 119.492 C3 C2 H4 119.492
C3 C2 H5 119.492 H4 C2 H5 115.863
H6 C3 H7 115.863
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.611      
2 C 1.495      
3 C 1.495      
4 H -0.595      
5 H -0.595      
6 H -0.595      
7 H -0.595      


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 -1.879 1.879
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.394 0.000 0.000
y 0.000 -16.470 0.000
z 0.000 0.000 -20.893
Traceless
 xyz
x 1.288 0.000 0.000
y 0.000 2.674 0.000
z 0.000 0.000 -3.961
Polar
3z2-r2-7.923
x2-y2-0.924
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.971 0.000 0.000
y 0.000 4.850 0.000
z 0.000 0.000 3.956


<r2> (average value of r2) Å2
<r2> 36.543
(<r2>)1/2 6.045