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: PBEPBE/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBEPBE/aug-cc-pVDZ
 hartrees
Energy at 0K-2702.919010
Energy at 298.15K-2702.921013
HF Energy-2702.919010
Nuclear repulsion energy440.751015
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/aug-cc-pVDZ
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 3613 3591 32.80      
2 A 1058 1051 62.37      
3 A 892 887 53.18      
4 A 608 604 64.93      
5 A 320 318 56.82      
6 A 303 301 4.53      
7 A 223 222 1.26      
8 A 155 154 60.23      
9 B 3610 3588 169.48      
10 B 1097 1090 103.75      
11 B 960 955 92.85      
12 B 618 614 135.20      
13 B 322 320 44.72      
14 B 303 301 42.58      
15 B 267 266 20.18      

Unscaled Zero Point Vibrational Energy (zpe) 7173.8 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 7130.1 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 PBEPBE/aug-cc-pVDZ
ABC
0.13185 0.12744 0.12239

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.139
O2 0.000 1.463 0.865
O3 0.000 -1.463 0.865
O4 1.393 0.029 -1.019
O5 -1.393 -0.029 -1.019
H6 1.644 -0.915 -1.133
H7 -1.644 0.915 -1.133

Atom - Atom Distances (Å)
  Se1 O2 O3 O4 O5 H6 H7
Se11.63331.63331.81211.81212.27162.2716
O21.63332.92692.74742.77793.51472.6448
O31.63332.92692.77792.74742.64483.5147
O41.81212.74742.77792.78640.98353.1658
O51.81212.77792.74742.78643.16580.9835
H62.27163.51472.64480.98353.16583.7634
H72.27162.64483.51473.16580.98353.7634

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 104.776 Se1 O5 H7 104.776
O2 Se1 O3 127.276 O2 Se1 O4 105.647
O2 Se1 O5 107.348 O3 Se1 O4 107.348
O3 Se1 O5 105.647 O4 Se1 O5 100.496
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se 2.137      
2 O -0.720      
3 O -0.720      
4 O -0.504      
5 O -0.504      
6 H 0.156      
7 H 0.156      


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 -2.279 2.279
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.983 -5.626 0.000
y -5.626 -43.471 0.000
z 0.000 0.000 -42.074
Traceless
 xyz
x 4.789 -5.626 0.000
y -5.626 -3.443 0.000
z 0.000 0.000 -1.347
Polar
3z2-r2-2.694
x2-y25.488
xy-5.626
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.162 -0.285 0.000
y -0.285 7.715 0.000
z 0.000 0.000 7.013


<r2> (average value of r2) Å2
<r2> 129.939
(<r2>)1/2 11.399