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All results from a given calculation for H3PO4 (Phosphoric Acid)

using model chemistry: PBEPBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3 1A
Energy calculated at PBEPBE/6-31G*
 hartrees
Energy at 0K-643.651742
Energy at 298.15K-643.657429
HF Energy-643.651742
Nuclear repulsion energy275.358022
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/6-31G*
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 3650 3597 11.06      
2 A 1280 1261 252.67      
3 A 1045 1030 71.77      
4 A 779 768 15.92      
5 A 435 429 31.52      
6 A 313 308 89.66      
7 E 3649 3597 111.02      
7 E 3649 3597 111.02      
8 E 1053 1038 79.85      
8 E 1053 1038 79.85      
9 E 890 877 290.90      
9 E 890 877 290.87      
10 E 422 416 61.68      
10 E 422 416 61.68      
11 E 353 348 34.47      
11 E 353 348 34.46      
12 E 139 137 72.12      
12 E 139 137 72.12      

Unscaled Zero Point Vibrational Energy (zpe) 10254.8 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 10108.2 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/6-31G*
ABC
0.14613 0.14329 0.14329

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

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.124
O2 0.000 0.000 1.617
O3 0.000 1.454 -0.606
O4 1.259 -0.727 -0.606
O5 -1.259 -0.727 -0.606
H6 0.551 2.073 -0.081
H7 1.520 -1.513 -0.081
H8 -2.070 -0.559 -0.081

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.49301.62721.62721.62722.15432.15432.1543
O21.49302.65672.65672.65672.73552.73552.7355
O31.62722.65672.51852.51850.98053.37472.9353
O41.62722.65672.51852.51852.93530.98053.3747
O51.62722.65672.51852.51853.37472.93530.9805
H62.15432.73550.98052.93533.37473.71433.7143
H72.15432.73553.37470.98052.93533.71433.7143
H82.15432.73552.93533.37470.98053.71433.7143

picture of Phosphoric Acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 O3 H6 108.865 P1 O4 H7 108.865
P1 O5 H8 108.865 O2 P1 O3 116.671
O2 P1 O4 116.671 O2 P1 O5 116.671
O3 P1 O4 101.407 O3 P1 O5 101.407
O4 P1 O5 101.407
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.949      
2 O -0.499      
3 O -0.586      
4 O -0.586      
5 O -0.586      
6 H 0.436      
7 H 0.436      
8 H 0.436      


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 0.054 0.054
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.446 0.000 0.000
y 0.000 -28.446 0.000
z 0.000 0.000 -43.510
Traceless
 xyz
x 7.532 0.000 0.000
y 0.000 7.532 0.000
z 0.000 0.000 -15.064
Polar
3z2-r2-30.128
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.627 0.000 -0.000
y 0.000 4.627 0.000
z -0.000 0.000 4.420


<r2> (average value of r2) Å2
<r2> 115.438
(<r2>)1/2 10.744