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

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

Conformer 2 (CS)

Jump to S1C1
Energy calculated at TPSSh/aug-cc-pVDZ
 hartrees
Energy at 0K-625.077647
Energy at 298.15K-625.081191
HF Energy-625.077647
Nuclear repulsion energy187.996873
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/aug-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' 3656 3536 79.24      
2 A' 1193 1154 129.05      
3 A' 1069 1034 36.06      
4 A' 715 692 119.28      
5 A' 433 418 10.09      
6 A' 383 370 134.23      
7 A' 302 292 6.81      
8 A" 3653 3533 44.98      
9 A" 1078 1043 50.23      
10 A" 709 685 311.02      
11 A" 398 385 40.98      
12 A" 137 133 16.14      

Unscaled Zero Point Vibrational Energy (zpe) 6862.7 cm-1
Scaled (by 0.9673) Zero Point Vibrational Energy (zpe) 6638.3 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 TPSSh/aug-cc-pVDZ
ABC
0.26983 0.24262 0.15317

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.304 0.350 0.000
O2 -1.059 0.980 0.000
O3 0.304 -0.729 1.297
O4 0.304 -0.729 -1.297
H5 -0.635 -0.882 1.524
H6 -0.635 -0.882 -1.524

Atom - Atom Distances (Å)
  S1 O2 O3 O4 H5 H6
S11.50181.68771.68772.17292.1729
O21.50182.54232.54232.44272.4427
O31.68772.54232.59490.97832.9775
O41.68772.54232.59492.97750.9783
H52.17292.44270.97832.97753.0475
H62.17292.44272.97750.97833.0475

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 106.104 S1 O4 H6 106.104
O2 S1 O3 105.561 O2 S1 O4 105.561
O3 S1 O4 100.490
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 1.359      
2 O -0.697      
3 O -0.495      
4 O -0.495      
5 H 0.164      
6 H 0.164      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.662 -1.071 0.000 1.259
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 5.189 -0.498 0.000
y -0.498 5.406 0.000
z 0.000 0.000 6.022


<r2> (average value of r2) Å2
<r2> 82.855
(<r2>)1/2 9.102