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

using model chemistry: QCISD/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-229.159897
Energy at 298.15K-229.165920
HF Energy-228.330959
Nuclear repulsion energy124.153205
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/cc-pVTZ
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' 3148 3008 16.51      
2 A' 3092 2954 13.35      
3 A' 3069 2932 10.53      
4 A' 1532 1464 4.49      
5 A' 1519 1451 1.51      
6 A' 1441 1376 19.84      
7 A' 1399 1337 9.28      
8 A' 1169 1117 11.99      
9 A' 1156 1105 16.45      
10 A' 1063 1016 15.51      
11 A' 880 841 3.28      
12 A' 512 489 8.78      
13 A' 311 297 1.31      
14 A" 3159 3018 31.65      
15 A" 3136 2997 0.34      
16 A" 1505 1438 5.65      
17 A" 1297 1239 0.38      
18 A" 1178 1125 4.32      
19 A" 815 779 0.64      
20 A" 232 222 0.45      
21 A" 93 89 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 15852.0 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 15146.6 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/cc-pVTZ
ABC
1.11938 0.14856 0.13795

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.492 0.907 0.000
C2 0.000 0.667 0.000
O3 -0.202 -0.766 0.000
O4 -1.495 -1.046 0.000
H5 1.688 1.979 0.000
H6 1.954 0.472 0.885
H7 1.954 0.472 -0.885
H8 -0.487 1.067 -0.888
H9 -0.487 1.067 0.888

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51122.38103.56901.08951.08911.08912.17472.1747
C21.51121.44702.27352.13802.15422.15421.08871.0887
O32.38101.44701.32323.33272.63922.63922.05642.0564
O43.56902.27351.32324.39123.87133.87132.50382.5038
H51.08952.13803.33274.39121.76771.76772.51992.5199
H61.08912.15422.63923.87131.76771.76973.07492.5126
H71.08912.15422.63923.87131.76771.76972.51263.0749
H82.17471.08872.05642.50382.51993.07492.51261.7755
H92.17471.08872.05642.50382.51992.51263.07491.7755

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 107.176 C1 C2 H8 112.521
C1 C2 H9 112.521 C2 C1 H5 109.518
C2 C1 H6 110.831 C2 C1 H7 110.831
C2 O3 O4 110.236 O3 C2 H8 107.549
O3 C2 H9 107.549 H5 C1 H6 108.459
H5 C1 H7 108.459 H6 C1 H7 108.676
H8 C2 H9 109.262
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability