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All results from a given calculation for H2SO4 (Sulfuric acid)

using model chemistry: QCISD(T)/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-698.931003
Energy at 298.15K-698.935960
HF Energy-698.029761
Nuclear repulsion energy284.178661
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 QCISD(T)/6-31G*
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 3684 3534        
2 A 1212 1163        
3 A 1190 1142        
4 A 798 765        
5 A 523 502        
6 A 421 404        
7 A 351 337        
8 A 233 223        
9 B 3680 3531        
10 B 1460 1401        
11 B 1216 1166        
12 B 875 839        
13 B 520 499        
14 B 473 454        
15 B 313 301        

Unscaled Zero Point Vibrational Energy (zpe) 8474.9 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 8130.0 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 QCISD(T)/6-31G*
ABC
0.16352 0.16085 0.15424

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.166
O2 0.000 1.284 0.834
O3 0.000 -1.284 0.834
O4 1.258 0.045 -0.860
O5 -1.258 -0.045 -0.860
H6 1.463 -0.878 -1.123
H7 -1.463 0.878 -1.123

Atom - Atom Distances (Å)
  S1 O2 O3 O4 O5 H6 H7
S11.44711.44711.62431.62432.13872.1387
O21.44712.56752.44732.49353.26252.4774
O31.44712.56752.49352.44732.47743.2625
O41.62432.44732.49352.51810.98062.8581
O51.62432.49352.44732.51812.85810.9806
H62.13873.26252.47740.98062.85813.4120
H72.13872.47743.26252.85810.98063.4120

picture of Sulfuric acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 O4 H7 47.831 S1 O5 H6 47.831
O2 S1 O3 125.029 O2 S1 O4 105.503
O2 S1 O5 108.416 O3 S1 O4 108.416
O3 S1 O5 105.503 O4 S1 O5 101.630
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability