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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-699.193985
Energy at 298.15K-699.199131
HF Energy-698.126220
Nuclear repulsion energy289.467272
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 MP2/6-31G(2df,p)
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 3815 3604 53.44      
2 A 1252 1183 157.89      
3 A 1172 1107 73.78      
4 A 842 795 102.29      
5 A 545 514 43.00      
6 A 441 417 17.16      
7 A 372 351 2.13      
8 A 245 232 102.15      
9 B 3811 3599 221.49      
10 B 1516 1432 239.33      
11 B 1190 1124 96.51      
12 B 902 852 309.55      
13 B 552 522 29.40      
14 B 494 466 44.57      
15 B 338 319 56.14      

Unscaled Zero Point Vibrational Energy (zpe) 8743.4 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 8258.1 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 MP2/6-31G(2df,p)
ABC
0.16937 0.16746 0.16002

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.160
O2 0.000 1.261 0.820
O3 0.000 -1.261 0.820
O4 1.234 -0.050 -0.843
O5 -1.234 0.050 -0.843
H6 -1.438 -0.862 -1.096
H7 1.438 0.862 -1.096

Atom - Atom Distances (Å)
  S1 O2 O3 O4 O5 H6 H7
S11.42361.42361.59071.59072.09482.0948
O21.42362.52252.45092.39903.20112.4291
O31.42362.52252.39902.45092.42913.2011
O41.59072.45092.39902.47012.80410.9678
O51.59072.39902.45092.47010.96782.8041
H62.09483.20112.42912.80410.96783.3526
H72.09482.42913.20110.96782.80413.3526

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 107.402 S1 O5 H6 107.402
O2 S1 O3 124.733 O2 S1 O4 108.669
O2 S1 O5 105.339 O3 S1 O4 105.339
O3 S1 O5 108.669 O4 S1 O5 101.865
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability