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

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-695.971957
Energy at 298.15K-695.975910
Nuclear repulsion energy262.130528
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 PBEPBE/3-21G
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 3272 3243 5.35      
2 A 1162 1152 113.20      
3 A 978 969 46.50      
4 A 634 628 33.46      
5 A 399 395 18.14      
6 A 360 357 41.75      
7 A 238 236 0.01      
8 A 154 152 5.46      
9 B 3273 3243 56.38      
10 B 1208 1197 52.61      
11 B 1079 1069 76.02      
12 B 710 703 188.20      
13 B 366 363 79.55      
14 B 362 359 13.60      
15 B 184 182 193.64      

Unscaled Zero Point Vibrational Energy (zpe) 7188.6 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 7123.2 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 PBEPBE/3-21G
ABC
0.14090 0.13970 0.12666

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.174
O2 -1.371 -0.098 0.954
O3 1.371 0.098 0.954
O4 0.000 1.269 -1.047
O5 0.000 -1.269 -1.047
H6 0.601 1.988 -0.647
H7 -0.601 -1.988 -0.647

Atom - Atom Distances (Å)
  S1 O2 O3 O4 O5 H6 H7
S11.58071.58071.76141.76142.23362.2336
O21.58072.74912.78502.69433.28752.5946
O31.58072.74912.69432.78502.59463.2875
O41.76142.78502.69432.53841.01903.3364
O51.76142.69432.78502.53843.33641.0190
H62.23363.28752.59461.01903.33644.1542
H72.23362.59463.28753.33641.01904.1542

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 38.130 S1 O5 H6 38.130
O2 S1 O3 120.816 O2 S1 O4 112.770
O2 S1 O5 107.324 O3 S1 O4 107.324
O3 S1 O5 112.770 O4 S1 O5 92.204
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 1.323      
2 O -0.498      
3 O -0.498      
4 O -0.534      
5 O -0.534      
6 H 0.371      
7 H 0.371      


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 -0.494 0.494
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.125 4.409 0.000
y 4.409 -25.515 0.000
z 0.000 0.000 -40.535
Traceless
 xyz
x -6.100 4.409 0.000
y 4.409 14.316 0.000
z 0.000 0.000 -8.215
Polar
3z2-r2-16.431
x2-y2-13.611
xy4.409
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.635 0.841 0.000
y 0.841 5.048 0.000
z 0.000 0.000 4.443


<r2> (average value of r2) Å2
<r2> 119.980
(<r2>)1/2 10.954