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: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-2701.620280
Energy at 298.15K-2701.622612
HF Energy-2701.620280
Nuclear repulsion energy452.728198
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 B1B95/6-31+G**
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 3809 3643 43.88      
2 A 1079 1032 80.26      
3 A 975 933 62.86      
4 A 692 662 79.30      
5 A 353 337 85.48      
6 A 327 313 5.73      
7 A 256 244 0.71      
8 A 175 167 87.80      
9 B 3805 3640 244.14      
10 B 1123 1074 143.08      
11 B 1042 997 91.31      
12 B 701 671 162.44      
13 B 357 341 72.49      
14 B 326 312 52.58      
15 B 285 273 35.74      

Unscaled Zero Point Vibrational Energy (zpe) 7652.2 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 7320.1 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 B1B95/6-31+G**
ABC
0.14047 0.13363 0.12931

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.132
O2 0.000 1.430 0.846
O3 0.000 -1.430 0.846
O4 1.347 0.013 -0.987
O5 -1.347 -0.013 -0.987
H6 1.613 -0.910 -1.123
H7 -1.613 0.910 -1.123

Atom - Atom Distances (Å)
  Se1 O2 O3 O4 O5 H6 H7
Se11.59851.59851.75091.75092.23732.2373
O21.59852.86052.67972.69383.45782.5983
O31.59852.86052.69382.67972.59833.4578
O41.75092.67972.69382.69330.97043.0952
O51.75092.69382.67972.69333.09520.9704
H62.23733.45782.59830.97043.09523.7033
H72.23732.59833.45783.09520.97043.7033

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 107.082 Se1 O5 H7 107.082
O2 Se1 O3 126.952 O2 Se1 O4 106.179
O2 Se1 O5 106.989 O3 Se1 O4 106.989
O3 Se1 O5 106.179 O4 Se1 O5 100.549
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se 1.386      
2 O -0.538      
3 O -0.538      
4 O -0.542      
5 O -0.542      
6 H 0.388      
7 H 0.388      


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 -2.638 2.638
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.341 -6.291 0.000
y -6.291 -43.693 0.000
z 0.000 0.000 -41.787
Traceless
 xyz
x 5.398 -6.291 0.000
y -6.291 -4.129 0.000
z 0.000 0.000 -1.270
Polar
3z2-r2-2.539
x2-y26.351
xy-6.291
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.744 -0.243 0.000
y -0.243 6.551 0.000
z 0.000 0.000 5.713


<r2> (average value of r2) Å2
<r2> 124.328
(<r2>)1/2 11.150