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

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-228.887529
Energy at 298.15K-228.893469
HF Energy-228.240478
Nuclear repulsion energy123.396577
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 MP4/6-31G*
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' 3159 3017        
2 A' 3091 2951        
3 A' 3075 2936        
4 A' 1553 1482        
5 A' 1541 1471        
6 A' 1462 1396        
7 A' 1405 1341        
8 A' 1223 1168        
9 A' 1164 1111        
10 A' 1056 1008        
11 A' 866 827        
12 A' 510 487        
13 A' 308 294        
14 A" 3171 3028        
15 A" 3148 3005        
16 A" 1531 1462        
17 A" 1297 1238        
18 A" 1181 1128        
19 A" 819 782        
20 A" 224 213        
21 A" 71 68        

Unscaled Zero Point Vibrational Energy (zpe) 15926.8 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 15206.9 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 MP4/6-31G*
ABC
1.09519 0.14719 0.13650

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.499 0.907 0.000
C2 0.000 0.681 0.000
O3 -0.204 -0.771 0.000
O4 -1.500 -1.054 0.000
H5 1.710 1.984 0.000
H6 1.957 0.463 0.891
H7 1.957 0.463 -0.891
H8 -0.491 1.081 -0.895
H9 -0.491 1.081 0.895

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51562.39103.58331.09691.09601.09602.18872.1887
C21.51561.46682.29392.14982.16122.16121.09621.0962
O32.39101.46681.32663.35482.64302.64302.07732.0773
O43.58332.29391.32664.41983.87883.87882.52552.5255
H51.09692.14983.35484.41981.77991.77992.54202.5420
H61.09602.16122.64303.87881.77991.78143.09262.5253
H71.09602.16122.64303.87881.77991.78142.52533.0926
H82.18871.09622.07732.52552.54203.09262.52531.7890
H92.18871.09622.07732.52552.54202.52533.09261.7890

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 106.574 C1 C2 H8 112.876
C1 C2 H9 112.876 C2 C1 H5 109.707
C2 C1 H6 110.667 C2 C1 H7 110.667
C2 O3 O4 110.300 O3 C2 H8 107.406
O3 C2 H9 107.406 H5 C1 H6 108.513
H5 C1 H7 108.513 H6 C1 H7 108.715
H8 C2 H9 109.374
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability