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

using model chemistry: QCISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-228.978306
Energy at 298.15K-228.984331
HF Energy-228.295922
Nuclear repulsion energy123.817673
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/6-311G*
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' 3134 3000 20.53      
2 A' 3080 2949 15.08      
3 A' 3055 2925 12.72      
4 A' 1543 1477 5.60      
5 A' 1528 1463 2.54      
6 A' 1458 1396 24.73      
7 A' 1412 1352 7.50      
8 A' 1173 1123 9.00      
9 A' 1149 1100 18.94      
10 A' 1064 1018 13.96      
11 A' 884 846 2.80      
12 A' 518 496 9.20      
13 A' 316 302 1.60      
14 A" 3147 3013 40.69      
15 A" 3126 2993 0.17      
16 A" 1515 1451 7.90      
17 A" 1308 1252 0.42      
18 A" 1188 1137 5.32      
19 A" 816 781 0.73      
20 A" 234 224 0.46      
21 A" 94 90 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 15870.2 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 15194.2 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/6-311G*
ABC
1.11180 0.14780 0.13725

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.498 0.906 0.000
C2 0.000 0.671 0.000
O3 -0.205 -0.766 0.000
O4 -1.498 -1.049 0.000
H5 1.704 1.982 0.000
H6 1.960 0.465 0.889
H7 1.960 0.465 -0.889
H8 -0.491 1.071 -0.893
H9 -0.491 1.071 0.893

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51612.38653.57731.09551.09481.09482.18632.1863
C21.51611.45112.28082.15022.16212.16211.09471.0947
O32.38651.45111.32333.34602.64482.64482.06202.0620
O43.57732.28081.32334.40923.87843.87842.51102.5110
H51.09552.15023.34604.40921.77661.77662.53902.5390
H61.09482.16212.64483.87841.77661.77813.09042.5251
H71.09482.16212.64483.87841.77661.77812.52513.0904
H82.18631.09472.06202.51102.53903.09042.52511.7853
H92.18631.09472.06202.51102.53902.52513.09041.7853

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 107.065 C1 C2 H8 112.741
C1 C2 H9 112.741 C2 C1 H5 109.790
C2 C1 H6 110.778 C2 C1 H7 110.778
C2 O3 O4 110.503 O3 C2 H8 107.361
O3 C2 H9 107.361 H5 C1 H6 108.413
H5 C1 H7 108.413 H6 C1 H7 108.599
H8 C2 H9 109.266
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability