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

using model chemistry: ROMP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at ROMP2/3-21G
 hartrees
Energy at 0K-227.391325
Energy at 298.15K-227.397265
HF Energy-226.990759
Nuclear repulsion energy120.172514
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 ROMP2/3-21G
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' 3178 3178        
2 A' 3121 3121        
3 A' 3104 3104        
4 A' 1615 1615        
5 A' 1603 1603        
6 A' 1498 1498        
7 A' 1425 1425        
8 A' 1169 1169        
9 A' 1024 1024        
10 A' 994 994        
11 A' 852 852        
12 A' 473 473        
13 A' 291 291        
14 A" 3196 3196        
15 A" 3171 3171        
16 A" 1590 1590        
17 A" 1335 1335        
18 A" 1194 1194        
19 A" 864 864        
20 A" 239 239        
21 A" 84 84        

Unscaled Zero Point Vibrational Energy (zpe) 16009.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16009.5 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 ROMP2/3-21G
ABC
1.02886 0.14119 0.13029

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.513 0.939 0.000
C2 0.000 0.695 0.000
O3 -0.157 -0.802 0.000
O4 -1.563 -1.072 0.000
H5 1.716 2.015 0.000
H6 1.964 0.491 0.889
H7 1.964 0.491 -0.889
H8 -0.482 1.097 -0.893
H9 -0.482 1.097 0.893

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.53232.41213.67451.09461.09281.09282.19152.1915
C21.53231.50492.35852.16502.16502.16501.09201.0920
O32.41211.50491.43193.38252.63792.63792.12412.1241
O43.67452.35851.43194.50293.95843.95842.58262.5826
H51.09462.16503.38254.50291.78111.78112.54392.5439
H61.09282.16502.63793.95841.78111.77823.08642.5198
H71.09282.16502.63793.95841.78111.77822.51983.0864
H82.19151.09202.12412.58262.54393.08642.51981.7864
H92.19151.09202.12412.58262.54392.51983.08641.7864

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 105.154 C1 C2 H8 112.156
C1 C2 H9 112.156 C2 C1 H5 109.883
C2 C1 H6 109.995 C2 C1 H7 109.995
C2 O3 O4 106.824 O3 C2 H8 108.712
O3 C2 H9 108.712 H5 C1 H6 109.025
H5 C1 H7 109.025 H6 C1 H7 108.892
H8 C2 H9 109.751
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability