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

using model chemistry: ROHF/6-31G*

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/6-31G*
 hartrees
Energy at 0K-228.242706
Energy at 298.15K-228.248909
HF Energy-228.242706
Nuclear repulsion energy125.273599
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/6-31G*
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' 3288 2928 37.47      
2 A' 3249 2893 21.44      
3 A' 3219 2866 19.02      
4 A' 1672 1489 2.61      
5 A' 1644 1463 2.01      
6 A' 1580 1407 22.91      
7 A' 1536 1368 9.72      
8 A' 1282 1142 87.65      
9 A' 1265 1126 17.92      
10 A' 1127 1003 17.00      
11 A' 963 857 7.23      
12 A' 551 490 7.46      
13 A' 337 300 1.05      
14 A" 3310 2947 68.89      
15 A" 3285 2925 0.01      
16 A" 1629 1450 4.20      
17 A" 1410 1255 0.67      
18 A" 1291 1149 5.97      
19 A" 881 784 0.12      
20 A" 259 230 0.71      
21 A" 103 92 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 16938.9 cm-1
Scaled (by 0.8904) Zero Point Vibrational Energy (zpe) 15082.4 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/6-31G*
ABC
1.14190 0.15079 0.14011

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.498 0.878 0.000
C2 0.000 0.660 0.000
O3 -0.219 -0.748 0.000
O4 -1.490 -1.026 0.000
H5 1.716 1.940 0.000
H6 1.951 0.434 0.880
H7 1.951 0.434 -0.880
H8 -0.469 1.079 -0.881
H9 -0.469 1.079 0.881

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51402.36453.54301.08471.08381.08382.16512.1651
C21.51401.42482.25022.14072.15182.15181.08221.0822
O32.36451.42481.30063.31192.62292.62292.04332.0433
O43.54302.25021.30064.36753.83983.83982.49992.4999
H51.08472.14073.31194.36751.75961.75962.50832.5083
H61.08382.15182.62293.83981.75961.75903.06112.5044
H71.08382.15182.62293.83981.75961.75902.50443.0611
H82.16511.08222.04332.49992.50833.06112.50441.7614
H92.16511.08222.04332.49992.50832.50443.06111.7614

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 107.100 C1 C2 H8 111.932
C1 C2 H9 111.932 C2 C1 H5 109.816
C2 C1 H6 110.763 C2 C1 H7 110.763
C2 O3 O4 111.220 O3 C2 H8 108.405
O3 C2 H9 108.405 H5 C1 H6 108.470
H5 C1 H7 108.470 H6 C1 H7 108.492
H8 C2 H9 108.935
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.516      
2 C 0.005      
3 O -0.314      
4 O -0.076      
5 H 0.175      
6 H 0.186      
7 H 0.186      
8 H 0.177      
9 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.095 2.300 0.000 2.547
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.220 -0.728 0.000
y -0.728 -25.130 0.000
z 0.000 0.000 -23.227
Traceless
 xyz
x -1.042 -0.728 0.000
y -0.728 -0.906 0.000
z 0.000 0.000 1.948
Polar
3z2-r23.896
x2-y2-0.090
xy-0.728
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> 87.624
(<r2>)1/2 9.361