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

using model chemistry: ROMP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at ROMP2/6-31G*
 hartrees
Energy at 0K-228.829683
Energy at 298.15K-228.835713
HF Energy-228.235586
Nuclear repulsion energy124.095596
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 ROMP2/6-31G*
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' 3218 3218        
2 A' 3144 3144        
3 A' 3125 3125        
4 A' 1572 1572        
5 A' 1562 1562        
6 A' 1479 1479        
7 A' 1422 1422        
8 A' 1221 1221        
9 A' 1180 1180        
10 A' 1072 1072        
11 A' 884 884        
12 A' 519 519        
13 A' 318 318        
14 A" 3229 3229        
15 A" 3208 3208        
16 A" 1550 1550        
17 A" 1315 1315        
18 A" 1198 1198        
19 A" 833 833        
20 A" 255 255        
21 A" 77 77        

Unscaled Zero Point Vibrational Energy (zpe) 16189.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16189.8 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 ROMP2/6-31G*
ABC
1.10409 0.14877 0.13795

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.496 0.896 0.000
C2 0.000 0.682 0.000
O3 -0.211 -0.765 0.000
O4 -1.491 -1.046 0.000
H5 1.715 1.966 0.000
H6 1.949 0.449 0.887
H7 1.949 0.449 -0.887
H8 -0.487 1.082 -0.892
H9 -0.487 1.082 0.892

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51112.38173.56241.09291.09191.09192.18212.1821
C21.51111.46252.28232.14302.15402.15401.09211.0921
O32.38171.46251.31023.34262.63182.63182.07012.0701
O43.56242.28231.31024.39943.85393.85392.51682.5168
H51.09292.14303.34264.39941.77341.77342.53502.5350
H61.09192.15402.63183.85391.77341.77463.08202.5167
H71.09192.15402.63183.85391.77341.77462.51673.0820
H82.18211.09212.07012.51682.53503.08202.51671.7834
H92.18211.09212.07012.51682.53502.51673.08201.7834

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 106.430 C1 C2 H8 112.919
C1 C2 H9 112.919 C2 C1 H5 109.716
C2 C1 H6 110.654 C2 C1 H7 110.654
C2 O3 O4 110.679 O3 C2 H8 107.374
O3 C2 H9 107.374 H5 C1 H6 108.522
H5 C1 H7 108.522 H6 C1 H7 108.716
H8 C2 H9 109.481
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability