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 HOSH (hydrogen thioperoxide)

using model chemistry: MP2/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-27.052043
Energy at 298.15K-27.054353
HF Energy-26.752697
Nuclear repulsion energy19.722285
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 MP2/CEP-31G*
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 3764 3574 59.76      
2 A 2720 2582 32.97      
3 A 1232 1170 47.70      
4 A 1025 973 3.26      
5 A 762 723 45.36      
6 A 482 458 109.83      

Unscaled Zero Point Vibrational Energy (zpe) 4992.3 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 4739.7 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 MP2/CEP-31G*
ABC
6.54679 0.48611 0.47325

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.592 -0.090 0.006
O2 1.110 0.031 -0.118
H3 -0.863 1.239 0.057
H4 1.453 -0.042 0.797

Atom - Atom Distances (Å)
  S1 O2 H3 H4
S11.71091.35752.1932
O21.71092.32040.9799
H31.35752.32042.7482
H42.19320.97992.7482

picture of hydrogen thioperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 O2 H4 105.975 O2 S1 H3 97.601
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability