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

using model chemistry: MP2/CEP-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 MP2/CEP-31G
 hartrees
Energy at 0K-45.417413
Energy at 298.15K-45.423287
HF Energy-45.066001
Nuclear repulsion energy69.086081
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 MP2/CEP-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' 3153 3047 42.42      
2 A' 3089 2985 30.22      
3 A' 3051 2948 23.95      
4 A' 1535 1483 4.64      
5 A' 1528 1477 4.37      
6 A' 1462 1413 2.60      
7 A' 1428 1380 55.39      
8 A' 1371 1325 139.00      
9 A' 1144 1106 5.07      
10 A' 1024 990 15.02      
11 A' 815 788 7.71      
12 A' 476 460 10.33      
13 A' 288 278 1.45      
14 A" 3185 3078 79.83      
15 A" 3162 3055 1.88      
16 A" 1514 1463 7.06      
17 A" 1280 1236 0.53      
18 A" 1159 1120 5.49      
19 A" 831 803 1.70      
20 A" 215 208 0.73      
21 A" 72 69 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 15890.9 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 15355.3 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 MP2/CEP-31G
ABC
1.03327 0.13794 0.12779

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.539 0.935 0.000
C2 0.000 0.731 0.000
O3 -0.206 -0.785 0.000
O4 -1.543 -1.118 0.000
H5 1.766 2.023 0.000
H6 1.992 0.477 0.902
H7 1.992 0.477 -0.902
H8 -0.495 1.123 -0.910
H9 -0.495 1.123 0.910

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.55252.45073.70341.11111.10831.10832.23642.2364
C21.55251.53052.40862.18772.20152.20151.10731.1073
O32.45071.53051.37743.43142.69072.69072.13372.1337
O43.70342.40861.37744.56223.98183.98182.63612.6361
H51.11112.18773.43144.56221.80391.80392.59792.5979
H61.10832.20152.69073.98181.80391.80393.14422.5699
H71.10832.20152.69073.98181.80391.80392.56993.1442
H82.23641.10732.13372.63612.59793.14422.56991.8191
H92.23641.10732.13372.63612.59792.56993.14421.8191

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 105.291 C1 C2 H8 113.390
C1 C2 H9 113.390 C2 C1 H5 109.313
C2 C1 H6 110.543 C2 C1 H7 110.543
C2 O3 O4 111.745 O3 C2 H8 106.879
O3 C2 H9 106.879 H5 C1 H6 108.731
H5 C1 H7 108.731 H6 C1 H7 108.936
H8 C2 H9 110.447
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability