return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: CID/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 CID/6-31G*
 hartrees
Energy at 0K-698.760884
Energy at 298.15K-698.766119
HF Energy-698.037446
Nuclear repulsion energy289.175394
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 CID/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 3891 3594 59.19      
2 A 1284 1186 214.39      
3 A 1249 1154 108.97      
4 A 892 824 114.00      
5 A 574 530 81.02      
6 A 453 418 22.92      
7 A 382 353 2.90      
8 A 253 234 123.07      
9 B 3885 3589 278.21      
10 B 1547 1429 358.29      
11 B 1264 1168 121.90      
12 B 954 882 375.54      
13 B 575 531 55.24      
14 B 512 473 54.34      
15 B 333 307 79.09      

Unscaled Zero Point Vibrational Energy (zpe) 9024.1 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 8335.6 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 CID/6-31G*
ABC
0.17006 0.16563 0.16005

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.159
O2 0.000 1.259 0.824
O3 0.000 -1.259 0.824
O4 1.234 -0.033 -0.846
O5 -1.234 0.033 -0.846
H6 -1.466 -0.871 -1.099
H7 1.466 0.871 -1.099

Atom - Atom Distances (Å)
  S1 O2 O3 O4 O5 H6 H7
S11.42441.42441.59121.59122.11852.1185
O21.42442.51872.44542.41133.22252.4490
O31.42442.51872.41132.44542.44903.2225
O41.59122.44542.41132.46852.83780.9668
O51.59122.41132.44542.46850.96682.8378
H62.11853.22252.44902.83780.96683.4095
H72.11852.44903.22250.96682.83783.4095

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 109.395 S1 O5 H6 109.395
O2 S1 O3 124.288 O2 S1 O4 108.249
O2 S1 O5 106.059 O3 S1 O4 106.059
O3 S1 O5 108.249 O4 S1 O5 101.736
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability