return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP3=FULL/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 MP3=FULL/6-31G*
 hartrees
Energy at 0K-228.869361
Energy at 298.15K-228.875413
HF Energy-228.241819
Nuclear repulsion energy124.216019
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 MP3=FULL/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' 3203 3005 14.63      
2 A' 3137 2944 13.70      
3 A' 3119 2927 8.71      
4 A' 1575 1478 3.45      
5 A' 1559 1463 3.31      
6 A' 1485 1393 19.56      
7 A' 1433 1345 6.21      
8 A' 1233 1157 109.31      
9 A' 1192 1119 15.74      
10 A' 1087 1020 12.51      
11 A' 905 849 2.79      
12 A' 527 495 9.51      
13 A' 320 301 1.08      
14 A" 3213 3014 28.60      
15 A" 3190 2993 4.53      
16 A" 1546 1451 6.67      
17 A" 1321 1240 0.06      
18 A" 1208 1134 4.89      
19 A" 834 783 0.85      
20 A" 245 230 0.48      
21 A" 85 80 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 16208.9 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 15208.8 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 MP3=FULL/6-31G*
ABC
1.11150 0.14896 0.13822

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.498 0.894 0.000
C2 0.000 0.670 0.000
O3 -0.214 -0.759 0.000
O4 -1.493 -1.043 0.000
H5 1.710 1.967 0.000
H6 1.955 0.449 0.888
H7 1.955 0.449 -0.888
H8 -0.480 1.086 -0.890
H9 -0.480 1.086 0.890

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51522.37983.56391.09341.09291.09292.17772.1777
C21.51521.44442.27222.14662.15822.15821.09351.0935
O32.37981.44441.31063.33632.63612.63612.06542.0654
O43.56392.27221.31064.39573.86033.86032.52032.5203
H51.09342.14663.33634.39571.77531.77532.52302.5230
H61.09292.15822.63613.86031.77531.77563.08122.5163
H71.09292.15822.63613.86031.77531.77562.51633.0812
H82.17771.09352.06542.52032.52303.08122.51631.7806
H92.17771.09352.06542.52032.52302.51633.08121.7806

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 107.022 C1 C2 H8 112.177
C1 C2 H9 112.177 C2 C1 H5 109.695
C2 C1 H6 110.646 C2 C1 H7 110.646
C2 O3 O4 111.037 O3 C2 H8 108.144
O3 C2 H9 108.144 H5 C1 H6 108.577
H5 C1 H7 108.577 H6 C1 H7 108.644
H8 C2 H9 109.006
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability