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All results from a given calculation for H2SeO4 (Selenic acid)

using model chemistry: HF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/6-31G
 hartrees
Energy at 0K-2697.603086
Energy at 298.15K-2697.605254
HF Energy-2697.603086
Nuclear repulsion energy441.070876
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/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 3954 3570 94.38      
2 A 1076 972 48.91      
3 A 788 712 97.05      
4 A 705 636 18.49      
5 A 368 332 233.75      
6 A 307 278 12.55      
7 A 261 236 3.35      
8 A 208 188 100.23      
9 B 3950 3566 385.17      
10 B 1103 996 95.99      
11 B 817 737 1.01      
12 B 760 686 169.81      
13 B 322 291 173.53      
14 B 317 286 69.19      
15 B 221 200 81.53      

Unscaled Zero Point Vibrational Energy (zpe) 7578.4 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 6842.6 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 HF/6-31G
ABC
0.13511 0.12499 0.12340

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.127
O2 0.000 1.491 0.900
O3 0.000 -1.491 0.900
O4 1.329 -0.001 -1.016
O5 -1.329 0.001 -1.016
H6 1.704 -0.855 -1.238
H7 -1.704 0.855 -1.238

Atom - Atom Distances (Å)
  Se1 O2 O3 O4 O5 H6 H7
Se11.67921.67921.75301.75302.34442.3444
O21.67922.98142.76822.76743.60202.8069
O31.67922.98142.76742.76822.80693.6020
O41.75302.76822.76742.65710.95853.1583
O51.75302.76742.76822.65713.15830.9585
H62.34443.60202.80690.95853.15833.8120
H72.34442.80693.60203.15830.95853.8120

picture of Selenic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 O4 H6 116.598 Se1 O5 H7 116.598
O2 Se1 O3 125.181 O2 Se1 O4 107.500
O2 Se1 O5 107.454 O3 Se1 O4 107.454
O3 Se1 O5 107.500 O4 Se1 O5 98.556
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se 2.321      
2 O -0.761      
3 O -0.761      
4 O -0.884      
5 O -0.884      
6 H 0.484      
7 H 0.484      


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 -3.173 3.173
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.314 -7.924 0.000
y -7.924 -47.925 0.000
z 0.000 0.000 -43.628
Traceless
 xyz
x 8.462 -7.924 0.000
y -7.924 -7.454 0.000
z 0.000 0.000 -1.008
Polar
3z2-r2-2.016
x2-y210.611
xy-7.924
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.161 -0.388 0.000
y -0.388 5.639 0.000
z 0.000 0.000 4.372


<r2> (average value of r2) Å2
<r2> 131.002
(<r2>)1/2 11.446