return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3OO (methylperoxy radical)

using model chemistry: HSEh1PBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at HSEh1PBE/cc-pVTZ
 hartrees
Energy at 0K-190.097942
Energy at 298.15K-190.101584
HF Energy-190.097942
Nuclear repulsion energy75.493597
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 HSEh1PBE/cc-pVTZ
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' 3171 3047 8.08      
2 A' 3062 2943 14.52      
3 A' 1481 1423 10.24      
4 A' 1443 1386 0.76      
5 A' 1249 1200 13.23      
6 A' 1186 1140 0.27      
7 A' 954 917 13.76      
8 A' 502 482 6.56      
9 A" 3155 3033 11.98      
10 A" 1468 1411 10.20      
11 A" 1133 1089 0.47      
12 A" 133 128 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 9468.0 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 9099.7 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 HSEh1PBE/cc-pVTZ
ABC
1.78604 0.38428 0.33662

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.989 -0.477 0.000
O2 0.000 0.561 0.000
O3 -1.203 0.064 0.000
H4 1.953 0.029 0.000
H5 0.870 -1.087 0.895
H6 0.870 -1.087 -0.895

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6
C11.43332.25761.08841.08931.0893
O21.43331.30172.02392.06702.0670
O32.25761.30173.15602.53442.5344
H41.08842.02393.15601.79351.7935
H51.08932.06702.53441.79351.7893
H61.08932.06702.53441.79351.7893

picture of methylperoxy radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 O3 111.174 O2 C1 H4 105.943
O2 C1 H5 109.288 O2 C1 H6 109.288
H4 C1 H5 110.884 H4 C1 H6 110.884
H5 C1 H6 110.435
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability