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 H2SeO4 (Selenic acid)

using model chemistry: LSDA/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at LSDA/3-21G*
 hartrees
Energy at 0K-2686.645620
Energy at 298.15K-2686.647747
HF Energy-2686.645620
Nuclear repulsion energy446.848769
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 LSDA/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 3343 3283 11.62      
2 A 1012 993 120.05      
3 A 979 961 16.29      
4 A 711 698 47.87      
5 A 331 325 102.34      
6 A 306 301 0.17      
7 A 235 231 15.06      
8 A 138 136 53.09      
9 B 3341 3281 100.15      
10 B 1111 1091 81.54      
11 B 1005 986 84.77      
12 B 744 731 138.55      
13 B 335 329 81.23      
14 B 300 294 72.82      
15 B 271 266 35.22      

Unscaled Zero Point Vibrational Energy (zpe) 7080.8 cm-1
Scaled (by 0.982) Zero Point Vibrational Energy (zpe) 6953.4 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 LSDA/3-21G*
ABC
0.14139 0.12809 0.12482

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.130
O2 0.000 1.462 0.843
O3 0.000 -1.462 0.843
O4 1.355 -0.047 -1.003
O5 -1.355 0.047 -1.003
H6 1.704 -0.996 -0.925
H7 -1.704 0.996 -0.925

Atom - Atom Distances (Å)
  Se1 O2 O3 O4 O5 H6 H7
Se11.62631.62631.76731.76732.23792.2379
O21.62632.92372.74242.69163.47392.4989
O31.62632.92372.69162.74242.49893.4739
O41.76732.74242.69162.71261.01363.2331
O51.76732.69162.74242.71263.23311.0136
H62.23793.47392.49891.01363.23313.9469
H72.23792.49893.47393.23311.01363.9469

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 103.845 Se1 O5 H7 103.845
O2 Se1 O3 128.030 O2 Se1 O4 107.753
O2 Se1 O5 104.885 O3 Se1 O4 104.885
O3 Se1 O5 107.753 O4 Se1 O5 100.248
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se 0.928      
2 O -0.376      
3 O -0.376      
4 O -0.475      
5 O -0.475      
6 H 0.387      
7 H 0.387      


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 -1.609 1.609
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.478 -6.835 0.000
y -6.835 -40.688 0.000
z 0.000 0.000 -41.463
Traceless
 xyz
x 6.597 -6.835 0.000
y -6.835 -2.718 0.000
z 0.000 0.000 -3.880
Polar
3z2-r2-7.760
x2-y26.210
xy-6.835
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.559 -0.725 0.000
y -0.725 5.360 0.000
z 0.000 0.000 4.059


<r2> (average value of r2) Å2
<r2> 125.437
(<r2>)1/2 11.200