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All results from a given calculation for H2SO3 (Sulfurous acid)

using model chemistry: TPSSh/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 1A'

Conformer 1 (CS)

Jump to S1C2
Vibrational Frequencies calculated at TPSSh/cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at TPSSh/cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at TPSSh/cc-pVDZ
 hartrees
Energy at 0K-625.036613
Energy at 298.15K-625.040261
HF Energy-625.036613
Nuclear repulsion energy188.547849
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/cc-pVDZ
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' 3615 3515 79.53      
2 A' 1206 1173 120.69      
3 A' 1082 1052 23.83      
4 A' 727 707 123.73      
5 A' 447 435 27.02      
6 A' 408 397 128.29      
7 A' 300 292 10.97      
8 A" 3612 3513 24.95      
9 A" 1067 1037 45.74      
10 A" 725 705 302.05      
11 A" 415 403 55.31      
12 A" 166 162 14.90      

Unscaled Zero Point Vibrational Energy (zpe) 6884.8 cm-1
Scaled (by 0.9724) Zero Point Vibrational Energy (zpe) 6694.8 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/cc-pVDZ
ABC
0.27154 0.24382 0.15440

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.304 0.351 0.000
O2 -1.056 0.973 0.000
O3 0.304 -0.726 1.296
O4 0.304 -0.726 -1.296
H5 -0.646 -0.896 1.481
H6 -0.646 -0.896 -1.481

Atom - Atom Distances (Å)
  S1 O2 O3 O4 H5 H6
S11.49581.68441.68442.15642.1564
O21.49582.53272.53272.41962.4196
O31.68442.53272.59120.98292.9396
O41.68442.53272.59122.93960.9829
H52.15642.41960.98292.93962.9621
H62.15642.41962.93960.98292.9621

picture of Sulfurous acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 O3 H5 104.817 S1 O4 H6 104.817
O2 S1 O3 105.421 O2 S1 O4 105.421
O3 S1 O4 100.558
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.836      
2 O -0.484      
3 O -0.349      
4 O -0.349      
5 H 0.173      
6 H 0.173      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.810 -1.064 0.000 1.337
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 3.766 -0.374 0.000
y -0.374 3.810 0.000
z 0.000 0.000 4.475


<r2> (average value of r2) Å2
<r2> 81.908
(<r2>)1/2 9.050