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

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 CS 2A'
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-226.299213
Energy at 298.15K-226.304697
HF Energy-226.299213
Nuclear repulsion energy119.014669
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 A' 3414 3119 0.22      
2 A' 3252 2971 0.66      
3 A' 3229 2950 2.45      
4 A' 1639 1497 4.63      
5 A' 1591 1453 0.33      
6 A' 1520 1388 1.42      
7 A' 1389 1269 13.69      
8 A' 1268 1158 3.82      
9 A' 1170 1069 1.38      
10 A' 1041 951 0.55      
11 A' 838 766 9.55      
12 A' 453 414 0.35      
13 A' 270 247 0.30      
14 A" 3425 3129 0.53      
15 A" 3347 3057 3.58      
16 A" 1629 1489 4.43      
17 A" 1312 1199 0.43      
18 A" 1104 1009 4.08      
19 A" 822 751 2.84      
20 A" 182 166 0.11      
21 A" 47 43 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 16469.7 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 15046.7 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
1.02429 0.13605 0.12601

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.522 0.995 0.000
C2 0.000 0.712 0.000
O3 -0.191 -0.835 0.000
O4 -1.538 -1.126 0.000
H5 1.703 2.087 0.000
H6 1.997 0.560 0.899
H7 1.997 0.560 -0.899
H8 -0.499 1.124 -0.908
H9 -0.499 1.124 0.908

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.54792.50663.72271.10701.10601.10602.21932.2193
C21.54791.55862.39622.18882.19552.19551.11541.1154
O32.50661.55861.37753.48222.74642.74642.18142.1814
O43.72272.39621.37754.56334.01814.01812.63962.6396
H51.10702.18883.48224.56331.79651.79652.56892.5689
H61.10602.19552.74644.01811.79651.79753.13302.5593
H71.10602.19552.74644.01811.79651.79752.55933.1330
H82.21931.11542.18142.63962.56893.13302.55931.8165
H92.21931.11542.18142.63962.56892.55933.13301.8165

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 107.586 C1 C2 H8 111.849
C1 C2 H9 111.849 C2 C1 H5 109.948
C2 C1 H6 110.531 C2 C1 H7 110.531
C2 O3 O4 109.237 O3 C2 H8 108.189
O3 C2 H9 108.189 H5 C1 H6 108.537
H5 C1 H7 108.537 H6 C1 H7 108.701
H8 C2 H9 109.039
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 C -0.239      
2 C -0.078      
3 O -0.038      
4 O -0.092      
5 H 0.090      
6 H 0.090      
7 H 0.090      
8 H 0.088      
9 H 0.088      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.932 1.638 0.000 1.884
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.881 -0.763 0.000
y -0.763 -22.535 0.000
z 0.000 0.000 -21.125
Traceless
 xyz
x -1.051 -0.763 0.000
y -0.763 -0.532 0.000
z 0.000 0.000 1.583
Polar
3z2-r23.166
x2-y2-0.346
xy-0.763
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.122 0.945 0.000
y 0.945 2.749 0.000
z 0.000 0.000 1.794


<r2> (average value of r2) Å2
<r2> 93.807
(<r2>)1/2 9.685