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

using model chemistry: QCISD(T)/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(T)/6-31G*
 hartrees
Energy at 0K-228.892829
Energy at 298.15K-228.898809
HF Energy-228.239789
Nuclear repulsion energy123.071182
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(T)/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' 3147 3018        
2 A' 3083 2958        
3 A' 3067 2942        
4 A' 1551 1488        
5 A' 1538 1476        
6 A' 1461 1402        
7 A' 1399 1342        
8 A' 1169 1122        
9 A' 1142 1096        
10 A' 1054 1011        
11 A' 869 834        
12 A' 506 486        
13 A' 308 296        
14 A" 3159 3030        
15 A" 3136 3008        
16 A" 1529 1467        
17 A" 1302 1249        
18 A" 1185 1137        
19 A" 821 787        
20 A" 228 218        
21 A" 95 92        

Unscaled Zero Point Vibrational Energy (zpe) 15874.7 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 15228.6 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(T)/6-31G*
ABC
1.09473 0.14646 0.13586

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.498 0.915 0.000
C2 0.000 0.677 0.000
O3 -0.196 -0.773 0.000
O4 -1.507 -1.058 0.000
H5 1.701 1.994 0.000
H6 1.961 0.474 0.891
H7 1.961 0.474 -0.891
H8 -0.494 1.076 -0.894
H9 -0.494 1.076 0.894

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51702.39173.59511.09741.09651.09652.18982.1898
C21.51701.46342.29832.15102.16312.16311.09671.0967
O32.39171.46341.34173.35462.64572.64572.07502.0750
O43.59512.29831.34174.42783.89433.89432.52542.5254
H51.09742.15103.35464.42781.78061.78062.54212.5421
H61.09652.16312.64573.89431.78061.78233.09442.5273
H71.09652.16312.64573.89431.78061.78232.52733.0944
H82.18981.09672.07502.52542.54213.09442.52731.7885
H92.18981.09672.07502.52542.54212.52733.09441.7885

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 106.722 C1 C2 H8 112.837
C1 C2 H9 112.837 C2 C1 H5 109.680
C2 C1 H6 110.689 C2 C1 H7 110.689
C2 O3 O4 109.965 O3 C2 H8 107.433
O3 C2 H9 107.433 H5 C1 H6 108.502
H5 C1 H7 108.502 H6 C1 H7 108.717
H8 C2 H9 109.264
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability