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

using model chemistry: B2PLYP=FULL/cc-pVTZ

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 B2PLYP=FULL/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULL/cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVTZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at B2PLYP=FULL/cc-pVTZ
 hartrees
Energy at 0K-624.908717
Energy at 298.15K-624.912494
HF Energy-624.587312
Nuclear repulsion energy192.938530
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 B2PLYP=FULL/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' 3720 3556 102.78      
2 A' 1248 1192 148.55      
3 A' 1113 1063 15.25      
4 A' 769 735 144.17      
5 A' 482 460 14.46      
6 A' 420 402 122.99      
7 A' 335 320 25.74      
8 A" 3718 3553 42.84      
9 A" 1092 1044 56.38      
10 A" 764 730 341.04      
11 A" 444 425 50.32      
12 A" 148 142 20.30      

Unscaled Zero Point Vibrational Energy (zpe) 7126.3 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 6811.3 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 B2PLYP=FULL/cc-pVTZ
ABC
0.28377 0.25648 0.16199

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.298 0.341 0.000
O2 -1.034 0.954 0.000
O3 0.298 -0.707 1.260
O4 0.298 -0.707 -1.260
H5 -0.630 -0.896 1.475
H6 -0.630 -0.896 -1.475

Atom - Atom Distances (Å)
  S1 O2 O3 O4 H5 H6
S11.46601.63911.63912.13742.1374
O21.46602.47412.47412.40102.4010
O31.63912.47412.52050.97082.8949
O41.63912.47412.52052.89490.9708
H52.13742.40100.97082.89492.9510
H62.13742.40102.89490.97082.9510

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 107.168 S1 O4 H6 107.168
O2 S1 O3 105.509 O2 S1 O4 105.509
O3 S1 O4 100.502
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability