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

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-2701.653682
Energy at 298.15K-2701.656200
HF Energy-2701.653682
Nuclear repulsion energy459.173824
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 mPW1PW91/6-31G(2df,p)
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 3830 3657 35.29      
2 A 1093 1044 91.44      
3 A 1028 982 44.03      
4 A 752 718 68.89      
5 A 365 349 72.91      
6 A 340 324 1.96      
7 A 271 259 3.15      
8 A 181 173 78.54      
9 B 3826 3653 230.41      
10 B 1162 1109 142.43      
11 B 1087 1038 73.63      
12 B 759 725 143.77      
13 B 368 351 68.24      
14 B 352 336 43.83      
15 B 294 281 31.75      

Unscaled Zero Point Vibrational Energy (zpe) 7854.6 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 7498.8 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 mPW1PW91/6-31G(2df,p)
ABC
0.14475 0.13764 0.13292

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.130
O2 0.000 1.414 0.833
O3 0.000 -1.414 0.833
O4 1.324 0.019 -0.971
O5 -1.324 -0.019 -0.971
H6 1.596 -0.899 -1.101
H7 -1.596 0.899 -1.101

Atom - Atom Distances (Å)
  Se1 O2 O3 O4 O5 H6 H7
Se11.57901.57901.72231.72232.20692.2069
O21.57902.82742.63712.65733.41132.5599
O31.57902.82742.65732.63712.55993.4113
O41.72232.63712.65732.64910.96613.0529
O51.72232.65732.63712.64913.05290.9661
H62.20693.41132.55990.96613.05293.6636
H72.20692.55993.41133.05290.96613.6636

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 106.961 Se1 O5 H7 106.961
O2 Se1 O3 127.102 O2 Se1 O4 105.953
O2 Se1 O5 107.129 O3 Se1 O4 107.129
O3 Se1 O5 105.953 O4 Se1 O5 100.541
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se 1.389      
2 O -0.500      
3 O -0.500      
4 O -0.549      
5 O -0.549      
6 H 0.355      
7 H 0.355      


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 -2.681 2.681
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.737 -5.646 0.000
y -5.646 -42.179 0.000
z 0.000 0.000 -40.178
Traceless
 xyz
x 5.441 -5.646 0.000
y -5.646 -4.222 0.000
z 0.000 0.000 -1.219
Polar
3z2-r2-2.439
x2-y26.442
xy-5.646
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.158 -0.323 0.000
y -0.323 5.669 0.000
z 0.000 0.000 5.008


<r2> (average value of r2) Å2
<r2> 120.534
(<r2>)1/2 10.979