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 CH3OOH (Methyl peroxide)

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-190.870053
Energy at 298.15K-190.874807
HF Energy-190.870053
Nuclear repulsion energy80.971522
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 TPSSh/6-31G(2df,p)
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 3718 3588 21.41      
2 A 3113 3004 21.25      
3 A 3076 2968 50.98      
4 A 3003 2898 40.31      
5 A 1523 1470 8.78      
6 A 1475 1423 3.71      
7 A 1454 1403 3.00      
8 A 1370 1323 44.63      
9 A 1213 1170 5.54      
10 A 1174 1133 2.27      
11 A 1033 996 16.24      
12 A 885 854 15.12      
13 A 436 421 5.50      
14 A 256 247 17.60      
15 A 210 203 88.92      

Unscaled Zero Point Vibrational Energy (zpe) 11968.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 11549.9 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 TPSSh/6-31G(2df,p)
ABC
1.41796 0.35060 0.30546

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.122 -0.222 0.021
O2 -0.025 0.605 -0.019
O3 -1.155 -0.271 -0.102
H4 1.965 0.473 0.037
H5 1.141 -0.850 0.923
H6 1.187 -0.860 -0.869
H7 -1.583 -0.109 0.751

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.41442.28101.09341.09851.09702.8037
O21.41441.43291.99512.08862.08281.8793
O32.28101.43293.21122.58032.53410.9683
H41.09341.99513.21121.79291.79023.6658
H51.09852.08862.58031.79291.79192.8277
H61.09702.08282.53411.79021.79193.2956
H72.80371.87930.96833.66582.82773.2956

picture of Methyl peroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 O3 106.469 O2 C1 H4 104.684
O2 C1 H5 111.821 O2 C1 H6 111.431
O2 O3 H7 101.239 H4 C1 H5 109.765
H4 C1 H6 109.625 H5 C1 H6 109.412
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability