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

using model chemistry: QCISD/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-229.048032
Energy at 298.15K-229.054049
HF Energy-228.265641
Nuclear repulsion energy124.130731
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(2df,p)
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' 3182 3015 12.15      
2 A' 3116 2952 11.37      
3 A' 3098 2935 8.11      
4 A' 1542 1461 3.74      
5 A' 1528 1447 1.70      
6 A' 1449 1373 17.38      
7 A' 1406 1332 10.62      
8 A' 1177 1116 13.03      
9 A' 1163 1102 13.83      
10 A' 1064 1008 14.04      
11 A' 883 836 2.22      
12 A' 516 489 8.97      
13 A' 310 294 1.15      
14 A" 3191 3023 23.86      
15 A" 3168 3001 2.52      
16 A" 1516 1436 5.16      
17 A" 1297 1229 0.23      
18 A" 1182 1120 4.25      
19 A" 814 771 0.88      
20 A" 233 221 0.41      
21 A" 93 88 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 15962.6 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 15123.0 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(2df,p)
ABC
1.11248 0.14880 0.13808

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.498 0.897 0.000
C2 0.000 0.667 0.000
O3 -0.206 -0.765 0.000
O4 -1.498 -1.036 0.000
H5 1.707 1.969 0.000
H6 1.957 0.455 0.887
H7 1.957 0.455 -0.887
H8 -0.487 1.071 -0.890
H9 -0.487 1.071 0.890

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51582.38073.56621.09191.09151.09152.18252.1825
C21.51581.44732.26882.14642.15852.15851.09151.0915
O32.38071.44731.32053.33672.63662.63662.05962.0596
O43.56622.26881.32054.39363.86613.86612.50092.5009
H51.09192.14643.33674.39361.77211.77212.53182.5318
H61.09152.15852.63663.86611.77211.77313.08312.5201
H71.09152.15852.63663.86611.77211.77312.52013.0831
H82.18251.09152.05962.50092.53183.08312.52011.7791
H92.18251.09152.05962.50092.53182.52013.08311.7791

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 106.900 C1 C2 H8 112.644
C1 C2 H9 112.644 C2 C1 H5 109.718
C2 C1 H6 110.707 C2 C1 H7 110.707
C2 O3 O4 110.028 O3 C2 H8 107.611
O3 C2 H9 107.611 H5 C1 H6 108.510
H5 C1 H7 108.510 H6 C1 H7 108.626
H8 C2 H9 109.162
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability