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

using model chemistry: QCISD/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 QCISD/6-31G**
 hartrees
Energy at 0K-228.918129
Energy at 298.15K-228.924141
HF Energy-228.248306
Nuclear repulsion energy123.369194
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 QCISD/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' 3207 3020 18.70      
2 A' 3140 2956 14.89      
3 A' 3121 2938 11.58      
4 A' 1569 1477 1.89      
5 A' 1556 1465 1.87      
6 A' 1477 1390 15.26      
7 A' 1418 1335 17.94      
8 A' 1178 1109 7.35      
9 A' 1125 1059 18.15      
10 A' 1066 1004 11.63      
11 A' 882 831 4.42      
12 A' 509 479 8.47      
13 A' 311 293 1.35      
14 A" 3219 3030 35.49      
15 A" 3196 3009 4.41      
16 A" 1544 1453 4.54      
17 A" 1309 1232 0.07      
18 A" 1192 1122 4.53      
19 A" 827 779 0.32      
20 A" 241 226 0.50      
21 A" 89 83 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 16087.0 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 15144.3 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 QCISD/6-31G**
ABC
1.10416 0.14701 0.13639

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.494 0.916 0.000
C2 0.000 0.673 0.000
O3 -0.192 -0.772 0.000
O4 -1.506 -1.056 0.000
H5 1.691 1.988 0.000
H6 1.955 0.479 0.885
H7 1.955 0.479 -0.885
H8 -0.491 1.069 -0.888
H9 -0.491 1.069 0.888

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51412.38623.59051.09001.08931.08932.18022.1802
C21.51411.45742.29272.14242.15462.15461.08961.0896
O32.38621.45741.34433.34132.63792.63792.06592.0659
O43.59052.29271.34434.41453.88823.88822.51722.5172
H51.09002.14243.34134.41451.76931.76932.52852.5285
H61.08932.15462.63793.88821.76931.77053.07802.5157
H71.08932.15462.63793.88821.76931.77052.51573.0780
H82.18021.08962.06592.51722.52853.07802.51571.7766
H92.18021.08962.06592.51722.52852.51573.07801.7766

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 106.826 C1 C2 H8 112.711
C1 C2 H9 112.711 C2 C1 H5 109.637
C2 C1 H6 110.654 C2 C1 H7 110.654
C2 O3 O4 109.773 O3 C2 H8 107.537
O3 C2 H9 107.537 H5 C1 H6 108.558
H5 C1 H7 108.558 H6 C1 H7 108.724
H8 C2 H9 109.234
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability