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

using model chemistry: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-227.371028
Energy at 298.15K-227.377064
HF Energy-226.994494
Nuclear repulsion energy121.081283
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 CID/3-21G*
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' 3201 2979 16.75      
2 A' 3154 2935 12.21      
3 A' 3133 2915 9.12      
4 A' 1631 1518 3.29      
5 A' 1615 1503 5.95      
6 A' 1518 1413 10.67      
7 A' 1455 1354 11.58      
8 A' 1322 1230 70.36      
9 A' 1197 1114 10.71      
10 A' 1039 966 12.33      
11 A' 897 834 3.76      
12 A' 491 457 7.32      
13 A' 300 280 0.71      
14 A" 3218 2994 37.05      
15 A" 3194 2972 2.90      
16 A" 1601 1489 6.21      
17 A" 1352 1258 0.33      
18 A" 1221 1136 5.09      
19 A" 875 815 1.27      
20 A" 239 222 0.77      
21 A" 92 86 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 16372.6 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 15234.7 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 CID/3-21G*
ABC
1.05299 0.14274 0.13197

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.511 0.927 0.000
C2 0.000 0.688 0.000
O3 -0.169 -0.789 0.000
O4 -1.550 -1.066 0.000
H5 1.720 1.999 0.000
H6 1.959 0.477 0.887
H7 1.959 0.477 -0.887
H8 -0.478 1.094 -0.891
H9 -0.478 1.094 0.891

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.53022.40153.65351.09181.09061.09062.18642.1864
C21.53021.48652.34122.16252.16102.16101.08921.0892
O32.40151.48651.40923.36722.63002.63002.10522.1052
O43.65352.34121.40924.48213.93523.93522.57032.5703
H51.09182.16253.36724.48211.77751.77752.53882.5388
H61.09062.16102.63003.93521.77751.77303.07922.5146
H71.09062.16102.63003.93521.77751.77302.51463.0792
H82.18641.08922.10522.57032.53883.07922.51461.7812
H92.18641.08922.10522.57032.53882.51463.07921.7812

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 105.502 C1 C2 H8 112.067
C1 C2 H9 112.067 C2 C1 H5 109.997
C2 C1 H6 109.956 C2 C1 H7 109.956
C2 O3 O4 107.868 O3 C2 H8 108.657
O3 C2 H9 108.657 H5 C1 H6 109.072
H5 C1 H7 109.072 H6 C1 H7 108.761
H8 C2 H9 109.707
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability