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

using model chemistry: ROHF/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-228.332404
Energy at 298.15K-228.338629
HF Energy-228.332404
Nuclear repulsion energy125.599780
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/cc-pVTZ
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' 3237 2917 38.44      
2 A' 3194 2878 22.58      
3 A' 3172 2858 19.10      
4 A' 1645 1482 4.51      
5 A' 1617 1457 1.95      
6 A' 1556 1402 22.93      
7 A' 1516 1366 4.68      
8 A' 1289 1161 89.56      
9 A' 1255 1130 22.05      
10 A' 1120 1009 19.51      
11 A' 955 861 6.40      
12 A' 549 495 7.75      
13 A' 337 304 0.91      
14 A" 3253 2931 65.41      
15 A" 3227 2907 0.24      
16 A" 1600 1442 5.12      
17 A" 1398 1260 0.94      
18 A" 1278 1152 5.12      
19 A" 873 787 0.29      
20 A" 256 231 0.63      
21 A" 105 95 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 16715.9 cm-1
Scaled (by 0.901) Zero Point Vibrational Energy (zpe) 15061.0 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/cc-pVTZ
ABC
1.15262 0.15113 0.14056

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.494 0.883 0.000
C2 0.000 0.657 0.000
O3 -0.222 -0.748 0.000
O4 -1.482 -1.030 0.000
H5 1.700 1.946 0.000
H6 1.950 0.445 0.879
H7 1.950 0.445 -0.879
H8 -0.469 1.076 -0.880
H9 -0.469 1.076 0.880

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51102.36683.53721.08301.08251.08252.15972.1597
C21.51101.42182.24482.13332.14952.14951.08171.0817
O32.36681.42181.29123.30872.62902.62902.04002.0400
O43.53722.24481.29124.35603.83733.83732.49702.4970
H51.08302.13333.30874.35601.75721.75722.49652.4965
H61.08252.14952.62903.83731.75721.75733.05662.5000
H71.08252.14952.62903.83731.75721.75732.50003.0566
H82.15971.08172.04002.49702.49653.05662.50001.7600
H92.15971.08172.04002.49702.49652.50003.05661.7600

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 107.572 C1 C2 H8 111.746
C1 C2 H9 111.746 C2 C1 H5 109.541
C2 C1 H6 110.871 C2 C1 H7 110.871
C2 O3 O4 111.585 O3 C2 H8 108.386
O3 C2 H9 108.386 H5 C1 H6 108.481
H5 C1 H7 108.481 H6 C1 H7 108.529
H8 C2 H9 108.889
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.285      
2 C 0.062      
3 O -0.146      
4 O -0.099      
5 H 0.093      
6 H 0.104      
7 H 0.104      
8 H 0.084      
9 H 0.084      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.142 2.207 0.000 2.485
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.364 -0.758 0.000
y -0.758 -25.153 0.000
z 0.000 0.000 -23.157
Traceless
 xyz
x -1.209 -0.758 0.000
y -0.758 -0.892 0.000
z 0.000 0.000 2.101
Polar
3z2-r24.202
x2-y2-0.211
xy-0.758
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> 87.431
(<r2>)1/2 9.350