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/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-190.868957
Energy at 298.15K-190.873621
HF Energy-190.868957
Nuclear repulsion energy80.525619
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/6-31+G**
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 3747 3607 38.76      
2 A 3137 3019 17.32      
3 A 3107 2990 46.32      
4 A 3029 2915 41.27      
5 A 1528 1471 9.32      
6 A 1479 1424 5.27      
7 A 1457 1403 1.61      
8 A 1356 1306 43.98      
9 A 1198 1153 6.50      
10 A 1170 1126 2.27      
11 A 1027 988 21.51      
12 A 866 834 16.71      
13 A 430 414 8.89      
14 A 246 237 10.53      
15 A 169 163 131.13      

Unscaled Zero Point Vibrational Energy (zpe) 11973.5 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 11524.5 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 TPSSh/6-31+G**
ABC
1.42173 0.34655 0.30028

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.134 -0.221 0.024
O2 -0.023 0.601 -0.025
O3 -1.163 -0.276 -0.097
H4 1.969 0.484 0.029
H5 1.157 -0.834 0.935
H6 1.197 -0.866 -0.860
H7 -1.638 -0.059 0.722

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.41922.30051.09301.09791.09632.8626
O21.41921.43991.99582.09042.08231.8978
O32.30051.43993.22532.59952.54940.9716
H41.09301.99583.22531.79371.79113.7128
H51.09792.09042.59951.79371.79502.9078
H61.09632.08232.54941.79111.79503.3452
H72.86261.89780.97163.71282.90783.3452

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 107.141 O2 C1 H4 104.457
O2 C1 H5 111.658 O2 C1 H6 111.096
O2 O3 H7 102.050 H4 C1 H5 109.914
H4 C1 H6 109.802 H5 C1 H6 109.792
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.265      
2 O -0.186      
3 O -0.379      
4 H 0.161      
5 H 0.148      
6 H 0.160      
7 H 0.360      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.714 -0.359 1.384 1.598
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.657 0.239 -0.095
y 0.239 3.332 -0.007
z -0.095 -0.007 3.137


<r2> (average value of r2) Å2
<r2> 46.743
(<r2>)1/2 6.837