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

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-73.796162
Energy at 298.15K-73.801506
Nuclear repulsion energy114.303322
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 HF/CEP-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 4082 3666 57.06      
2 A 1284 1153 362.43      
3 A 1274 1144 18.10      
4 A 924 830 107.74      
5 A 590 530 98.08      
6 A 464 417 17.72      
7 A 402 361 1.31      
8 A 269 241 137.57      
9 B 4079 3663 322.02      
10 B 1527 1372 405.55      
11 B 1287 1156 142.85      
12 B 982 882 388.55      
13 B 600 539 72.75      
14 B 529 475 55.10      
15 B 339 304 89.52      

Unscaled Zero Point Vibrational Energy (zpe) 9315.6 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 8365.4 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 HF/CEP-31G*
ABC
0.17146 0.16623 0.16154

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.201
O2 0.000 1.255 0.871
O3 0.000 -1.255 0.871
O4 1.226 -0.026 -0.798
O5 -1.226 0.026 -0.798
H6 -1.467 -0.868 -1.041
H7 1.467 0.868 -1.041

Atom - Atom Distances (Å)
  S1 O2 O3 O4 O5 H6 H7
S11.42321.42321.58151.58152.10872.1087
O21.42322.51042.43572.40833.21182.4412
O31.42322.51042.40832.43572.44123.2118
O41.58152.43572.40832.45232.83200.9573
O51.58152.40832.43572.45230.95732.8320
H62.10873.21182.44122.83200.95733.4094
H72.10872.44123.21180.95732.83203.4094

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 109.871 S1 O5 H6 109.871
O2 S1 O3 123.760 O2 S1 O4 108.205
O2 S1 O5 106.435 O3 S1 O4 106.435
O3 S1 O5 108.205 O4 S1 O5 101.668
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.908      
2 O -0.425      
3 O -0.425      
4 O -0.517      
5 O -0.517      
6 H 0.488      
7 H 0.488      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.572 3.572
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.185 6.209 0.000
y 6.209 -37.152 0.000
z 0.000 0.000 -35.099
Traceless
 xyz
x 4.940 6.209 0.000
y 6.209 -4.010 0.000
z 0.000 0.000 -0.931
Polar
3z2-r2-1.862
x2-y25.967
xy6.209
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.588 0.235 0.000
y 0.235 4.192 0.000
z 0.000 0.000 3.544


<r2> (average value of r2) Å2
<r2> 83.459
(<r2>)1/2 9.136