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

using model chemistry: ROMP2/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-228.885442
Energy at 298.15K-228.891464
HF Energy-228.254367
Nuclear repulsion energy124.205177
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3205 3205        
2 A' 3116 3116        
3 A' 3101 3101        
4 A' 1512 1512        
5 A' 1501 1501        
6 A' 1427 1427        
7 A' 1380 1380        
8 A' 1223 1223        
9 A' 1154 1154        
10 A' 1071 1071        
11 A' 873 873        
12 A' 522 522        
13 A' 312 312        
14 A" 3211 3211        
15 A" 3184 3184        
16 A" 1483 1483        
17 A" 1284 1284        
18 A" 1164 1164        
19 A" 810 810        
20 A" 251 251        
21 A" 78 78        

Unscaled Zero Point Vibrational Energy (zpe) 15931.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15931.5 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/cc-pVDZ
ABC
1.10607 0.14889 0.13819

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.499 0.894 0.000
C2 0.000 0.675 0.000
O3 -0.219 -0.765 0.000
O4 -1.488 -1.041 0.000
H5 1.717 1.973 0.000
H6 1.958 0.444 0.894
H7 1.958 0.444 -0.894
H8 -0.488 1.086 -0.898
H9 -0.488 1.086 0.898

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51492.38763.55861.10141.10111.10112.18872.1887
C21.51491.45602.27092.15252.16492.16491.10161.1016
O32.38761.45601.29893.35302.64562.64562.07492.0749
O43.55862.27091.29894.39933.85743.85742.51632.5163
H51.10142.15253.35304.39931.78781.78782.54012.5401
H61.10112.16492.64563.85741.78781.78853.09932.5286
H71.10112.16492.64563.85741.78781.78852.52863.0993
H82.18871.10162.07492.51632.54013.09932.52861.7961
H92.18871.10162.07492.51632.54012.52863.09931.7961

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 106.943 C1 C2 H8 112.584
C1 C2 H9 112.584 C2 C1 H5 109.702
C2 C1 H6 110.706 C2 C1 H7 110.706
C2 O3 O4 110.911 O3 C2 H8 107.628
O3 C2 H9 107.628 H5 C1 H6 108.527
H5 C1 H7 108.527 H6 C1 H7 108.613
H8 C2 H9 109.212
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability