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

using model chemistry: ROHF/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at ROHF/6-31+G**
 hartrees
Energy at 0K-228.248457
Energy at 298.15K-228.254687
HF Energy-228.248457
Nuclear repulsion energy125.228438
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 ROHF/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3281 2808 40.80      
2 A' 3249 2781 20.03      
3 A' 3215 2752 21.08      
4 A' 1666 1426 3.68      
5 A' 1638 1402 2.39      
6 A' 1576 1349 23.03      
7 A' 1532 1311 9.36      
8 A' 1284 1099 92.35      
9 A' 1261 1079 20.39      
10 A' 1125 963 19.84      
11 A' 960 821 8.40      
12 A' 550 470 7.70      
13 A' 338 289 1.07      
14 A" 3308 2831 62.70      
15 A" 3281 2808 1.24      
16 A" 1624 1390 5.44      
17 A" 1408 1205 1.06      
18 A" 1286 1101 5.27      
19 A" 880 753 0.07      
20 A" 260 222 0.68      
21 A" 110 95 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 16914.0 cm-1
Scaled (by 0.8559) Zero Point Vibrational Energy (zpe) 14476.7 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 ROHF/6-31+G**
ABC
1.14356 0.15048 0.13988

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.498 0.880 0.000
C2 0.000 0.662 0.000
O3 -0.220 -0.747 0.000
O4 -1.488 -1.031 0.000
H5 1.711 1.944 0.000
H6 1.953 0.440 0.880
H7 1.953 0.440 -0.880
H8 -0.469 1.078 -0.882
H9 -0.469 1.078 0.882

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51412.36693.54591.08521.08401.08402.16532.1653
C21.51411.42612.25412.13842.15382.15381.08211.0821
O32.36691.42611.29943.31292.62852.62852.04222.0422
O43.54592.25411.29944.36923.84503.84502.50272.5027
H51.08522.13843.31294.36921.75951.75952.50662.5066
H61.08402.15382.62853.84501.75951.75983.06272.5054
H71.08402.15382.62853.84501.75951.75982.50543.0627
H82.16531.08212.04222.50272.50663.06272.50541.7635
H92.16531.08212.04222.50272.50662.50543.06271.7635

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 107.183 C1 C2 H8 111.950
C1 C2 H9 111.950 C2 C1 H5 109.604
C2 C1 H6 110.906 C2 C1 H7 110.906
C2 O3 O4 111.504 O3 C2 H8 108.233
O3 C2 H9 108.233 H5 C1 H6 108.415
H5 C1 H7 108.415 H6 C1 H7 108.521
H8 C2 H9 109.141
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.696      
2 C -0.050      
3 O -0.221      
4 O -0.064      
5 H 0.206      
6 H 0.213      
7 H 0.213      
8 H 0.199      
9 H 0.199      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.167 2.407 0.000 2.675
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.652 -0.756 0.000
y -0.756 -25.529 0.000
z 0.000 0.000 -23.455
Traceless
 xyz
x -1.160 -0.756 0.000
y -0.756 -0.976 0.000
z 0.000 0.000 2.135
Polar
3z2-r24.271
x2-y2-0.123
xy-0.756
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 87.962
(<r2>)1/2 9.379