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

using model chemistry: ROMP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-225.532910
Energy at 298.15K-225.538722
HF Energy-225.363225
Nuclear repulsion energy120.703634
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/STO-3G
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' 3564 3564        
2 A' 3383 3383        
3 A' 3362 3362        
4 A' 1730 1730        
5 A' 1704 1704        
6 A' 1612 1612        
7 A' 1520 1520        
8 A' 1320 1320        
9 A' 1264 1264        
10 A' 1159 1159        
11 A' 986 986        
12 A' 518 518        
13 A' 307 307        
14 A" 3566 3566        
15 A" 3476 3476        
16 A" 1718 1718        
17 A" 1397 1397        
18 A" 1236 1236        
19 A" 881 881        
20 A" 204 204        
21 A" 82 82        

Unscaled Zero Point Vibrational Energy (zpe) 17494.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17494.0 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 ROMP2/STO-3G
ABC
1.04352 0.14127 0.13071

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.534 0.934 0.000
C2 0.000 0.669 0.000
O3 -0.196 -0.813 0.000
O4 -1.551 -1.043 0.000
H5 1.728 2.020 0.000
H6 2.001 0.491 0.896
H7 2.001 0.491 -0.896
H8 -0.479 1.114 -0.901
H9 -0.479 1.114 0.901

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.55712.45853.66441.10311.10291.10292.21312.2131
C21.55711.49422.31002.19352.19932.19931.11341.1134
O32.45851.49421.37443.42412.70692.70692.14572.1457
O43.66442.31001.37444.48703.97123.97122.57202.5720
H51.10312.19353.42414.48701.79291.79292.55002.5500
H61.10292.19932.70693.97121.79291.79183.12512.5568
H71.10292.19932.70693.97121.79291.79182.55683.1251
H82.21311.11342.14572.57202.55003.12512.55681.8021
H92.21311.11342.14572.57202.55002.55683.12511.8021

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 107.346 C1 C2 H8 110.841
C1 C2 H9 110.841 C2 C1 H5 109.915
C2 C1 H6 110.381 C2 C1 H7 110.381
C2 O3 O4 107.200 O3 C2 H8 109.885
O3 C2 H9 109.885 H5 C1 H6 108.737
H5 C1 H7 108.737 H6 C1 H7 108.646
H8 C2 H9 108.047
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability