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

using model chemistry: MP2/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 MP2/STO-3G
 hartrees
Energy at 0K-225.532654
Energy at 298.15K-225.538478
HF Energy-225.364697
Nuclear repulsion energy120.790564
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 MP2/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' 3563 3107 0.76      
2 A' 3383 2949 0.86      
3 A' 3362 2931 4.47      
4 A' 1731 1509 0.85      
5 A' 1704 1486 1.47      
6 A' 1613 1406 0.58      
7 A' 1522 1327 18.34      
8 A' 1405 1225 45.66      
9 A' 1264 1102 1.56      
10 A' 1160 1011 0.20      
11 A' 987 861 1.08      
12 A' 520 454 1.91      
13 A' 307 268 0.30      
14 A" 3566 3109 1.21      
15 A" 3476 3030 7.18      
16 A" 1718 1498 1.35      
17 A" 1397 1218 0.01      
18 A" 1236 1078 6.51      
19 A" 882 769 0.36      
20 A" 205 179 0.31      
21 A" 82 71 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 17540.9 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 15293.9 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 MP2/STO-3G
ABC
1.04503 0.14141 0.13084

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.534 0.933 0.000
C2 0.000 0.669 0.000
O3 -0.198 -0.812 0.000
O4 -1.549 -1.043 0.000
H5 1.728 2.019 0.000
H6 2.001 0.489 0.896
H7 2.001 0.489 -0.896
H8 -0.478 1.116 -0.901
H9 -0.478 1.116 0.901

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.55702.45893.66201.10311.10291.10292.21252.2125
C21.55701.49392.30832.19312.19942.19941.11351.1135
O32.45891.49391.37043.42412.70772.70772.14602.1460
O43.66202.30831.37044.48483.96873.96872.57222.5722
H51.10312.19313.42414.48481.79301.79302.54862.5486
H61.10292.19942.70773.96871.79301.79203.12482.5564
H71.10292.19942.70773.96871.79301.79202.55643.1248
H82.21251.11352.14602.57222.54863.12482.55641.8019
H92.21251.11352.14602.57222.54862.55643.12481.8019

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 107.389 C1 C2 H8 110.797
C1 C2 H9 110.797 C2 C1 H5 109.888
C2 C1 H6 110.388 C2 C1 H7 110.388
C2 O3 O4 107.314 O3 C2 H8 109.924
O3 C2 H9 109.924 H5 C1 H6 108.735
H5 C1 H7 108.735 H6 C1 H7 108.662
H8 C2 H9 108.017
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability