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

using model chemistry: G3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at G3
 hartrees
Energy at 0K-229.366233
Energy at 298.15K-229.360252
HF Energy-228.242706
Nuclear repulsion energy125.273599
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 HF/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' 3288 3098 37.47      
2 A' 3249 3061 21.44      
3 A' 3219 3033 19.02      
4 A' 1672 1575 2.61      
5 A' 1644 1549 2.01      
6 A' 1580 1489 22.91      
7 A' 1536 1447 9.72      
8 A' 1282 1208 87.65      
9 A' 1265 1192 17.92      
10 A' 1127 1062 17.00      
11 A' 963 907 7.23      
12 A' 551 519 7.46      
13 A' 337 317 1.05      
14 A" 3310 3118 68.88      
15 A" 3285 3095 0.01      
16 A" 1629 1535 4.20      
17 A" 1410 1328 0.67      
18 A" 1291 1216 5.97      
19 A" 881 830 0.12      
20 A" 259 244 0.71      
21 A" 103 97 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 16938.9 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 15959.8 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 MP2=FULL/6-31G*
ABC
1.10625 0.14889 0.13808

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.494 0.898 0.000
C2 0.000 0.681 0.000
O3 -0.209 -0.765 0.000
O4 -1.490 -1.047 0.000
H5 1.711 1.968 0.000
H6 1.947 0.452 0.887
H7 1.947 0.452 -0.887
H8 -0.488 1.080 -0.891
H9 -0.488 1.080 0.891

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.50932.38013.56111.09271.09151.09152.18062.1806
C21.50931.46092.28122.14152.15212.15211.09171.0917
O32.38011.46091.31113.34072.63062.63062.06792.0679
O43.56112.28121.31114.39743.85333.85332.51402.5140
H51.09272.14153.34074.39741.77271.77272.53382.5338
H61.09152.15212.63063.85331.77271.77423.08032.5152
H71.09152.15212.63063.85331.77271.77422.51523.0803
H82.18061.09172.06792.51402.53383.08032.51521.7823
H92.18061.09172.06792.51402.53382.51523.08031.7823

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 107.100 C1 C2 H8 111.932
C1 C2 H9 111.932 C2 C1 H5 109.816
C2 C1 H6 110.763 C2 C1 H7 110.763
C2 O3 O4 111.220 O3 C2 H8 108.405
O3 C2 H9 108.405 H5 C1 H6 108.470
H5 C1 H7 108.470 H6 C1 H7 108.492
H8 C2 H9 108.935
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability