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All results from a given calculation for C2H5OO (ethylperoxy radical)

using model chemistry: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HF/SDD
 hartrees
Energy at 0K-228.205077
Energy at 298.15K-228.211173
HF Energy-228.205077
Nuclear repulsion energy122.530771
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/SDD
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3306 2977 52.19      
2 A' 3267 2942 29.43      
3 A' 3217 2897 30.13      
4 A' 1671 1505 9.00      
5 A' 1650 1485 6.68      
6 A' 1577 1420 19.03      
7 A' 1538 1385 11.42      
8 A' 1250 1125 22.89      
9 A' 1142 1028 60.55      
10 A' 1055 950 22.10      
11 A' 907 817 9.87      
12 A' 514 463 6.72      
13 A' 318 286 1.25      
14 A" 3337 3005 79.53      
15 A" 3309 2979 5.03      
16 A" 1634 1472 8.71      
17 A" 1406 1266 0.23      
18 A" 1290 1161 8.68      
19 A" 902 812 1.17      
20 A" 241 217 1.11      
21 A" 97 87 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 16813.8 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 15139.2 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 HF/SDD
ABC
1.11188 0.14381 0.13364

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.500 0.929 0.000
C2 0.000 0.688 0.000
O3 -0.192 -0.761 0.000
O4 -1.516 -1.097 0.000
H5 1.699 1.995 0.000
H6 1.959 0.493 0.877
H7 1.959 0.493 -0.877
H8 -0.478 1.089 -0.882
H9 -0.478 1.089 0.882

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51952.39183.63371.08371.08211.08212.17202.1720
C21.51951.46222.34202.14292.15552.15551.08021.0802
O32.39181.46221.36633.34192.63982.63982.06992.0699
O43.63372.34201.36634.46003.92103.92102.57572.5757
H51.08372.14293.34194.46001.75871.75872.51702.5170
H61.08212.15552.63983.92101.75871.75503.06452.5093
H71.08212.15552.63983.92101.75871.75502.50933.0645
H82.17201.08022.06992.57572.51703.06452.50931.7633
H92.17201.08022.06992.57572.51702.50933.06451.7633

picture of ethylperoxy radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 106.658 C1 C2 H8 112.222
C1 C2 H9 112.222 C2 C1 H5 109.673
C2 C1 H6 110.772 C2 C1 H7 110.772
C2 O3 O4 111.745 O3 C2 H8 108.069
O3 C2 H9 108.069 H5 C1 H6 108.594
H5 C1 H7 108.594 H6 C1 H7 108.374
H8 C2 H9 109.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.552      
2 C -0.065      
3 O -0.292      
4 O -0.048      
5 H 0.178      
6 H 0.203      
7 H 0.203      
8 H 0.187      
9 H 0.187      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.983 2.869 0.000 3.033
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.431 -0.738 0.000
y -0.738 -25.886 0.000
z 0.000 0.000 -23.288
Traceless
 xyz
x -0.844 -0.738 0.000
y -0.738 -1.527 0.000
z 0.000 0.000 2.370
Polar
3z2-r24.741
x2-y20.455
xy-0.738
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.966 0.907 0.000
y 0.907 3.992 0.000
z 0.000 0.000 3.299


<r2> (average value of r2) Å2
<r2> 90.957
(<r2>)1/2 9.537