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

using model chemistry: HF/SDD

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/SDD
 hartrees
Energy at 0K-309.427586
Energy at 298.15K-309.429597
HF Energy-309.427586
Nuclear repulsion energy150.346269
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/SDD
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 3990 3593 123.35      
2 A 1122 1010 37.19      
3 A 736 663 95.67      
4 A 617 556 0.02      
5 A 370 333 264.72      
6 A 307 276 1.92      
7 A 239 215 2.98      
8 A 224 202 70.09      
9 B 3985 3588 372.16      
10 B 1135 1022 87.96      
11 B 731 658 144.58      
12 B 675 608 7.86      
13 B 308 277 234.27      
14 B 296 267 29.02      
15 B 237 213 43.59      

Unscaled Zero Point Vibrational Energy (zpe) 7485.9 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 6740.3 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/SDD
ABC
0.13433 0.12046 0.12000

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.135
O2 0.000 1.538 0.890
O3 0.000 -1.538 0.890
O4 1.337 0.012 -1.015
O5 -1.337 -0.012 -1.015
H6 1.678 -0.840 -1.297
H7 -1.678 0.840 -1.297

Atom - Atom Distances (Å)
  Se1 O2 O3 O4 O5 H6 H7
Se11.71361.71361.76301.76302.36052.3605
O21.71363.07582.78302.79623.64102.8439
O31.71363.07582.79622.78302.84393.6410
O41.76302.78302.79622.67390.96053.1396
O51.76302.79622.78302.67393.13960.9605
H62.36053.64102.84390.96053.13963.7538
H72.36052.84393.64103.13960.96053.7538

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 117.071 Se1 O5 H7 117.071
O2 Se1 O3 127.655 O2 Se1 O4 106.345
O2 Se1 O5 107.075 O3 Se1 O4 107.075
O3 Se1 O5 106.345 O4 Se1 O5 98.634
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se 1.860      
2 O -0.639      
3 O -0.639      
4 O -0.777      
5 O -0.777      
6 H 0.486      
7 H 0.486      


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 -3.239 3.239
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.863 -7.966 0.000
y -7.966 -44.752 0.000
z 0.000 0.000 -39.348
Traceless
 xyz
x 7.187 -7.966 0.000
y -7.966 -7.646 0.000
z 0.000 0.000 0.459
Polar
3z2-r20.918
x2-y29.889
xy-7.966
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.597 -0.312 0.000
y -0.312 6.559 0.000
z 0.000 0.000 4.801


<r2> (average value of r2) Å2
<r2> 130.884
(<r2>)1/2 11.440