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

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3 1A
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-635.765198
Energy at 298.15K-635.769450
HF Energy-635.765198
Nuclear repulsion energy260.646329
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 B3PW91/STO-3G
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 3733 3304 55.45      
2 A 1341 1187 45.92      
3 A 1133 1003 24.03      
4 A 698 618 2.26      
5 A 324 287 8.62      
6 A 168 149 22.78      
7 E 3731 3302 10.77      
7 E 3731 3302 10.77      
8 E 1287 1139 26.34      
8 E 1287 1139 26.34      
9 E 815 721 134.19      
9 E 815 721 134.19      
10 E 304 269 14.73      
10 E 304 269 14.74      
11 E 256 227 46.48      
11 E 256 227 46.48      
12 E 55 49 38.76      
12 E 55 49 38.76      

Unscaled Zero Point Vibrational Energy (zpe) 10146.0 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 8979.2 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 B3PW91/STO-3G
ABC
0.13391 0.12686 0.12686

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.162
O2 0.000 0.000 1.719
O3 0.000 1.524 -0.675
O4 1.320 -0.762 -0.675
O5 -1.320 -0.762 -0.675
H6 0.461 2.135 0.008
H7 1.618 -1.466 0.008
H8 -2.079 -0.668 0.008

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.55691.73891.73891.73892.18922.18922.1892
O21.55692.83802.83802.83802.77402.77402.7740
O31.73892.83802.63992.63991.02573.46833.0977
O41.73892.83802.63992.63993.09771.02573.4683
O51.73892.83802.63992.63993.46833.09781.0257
H62.18922.77401.02573.09773.46833.78243.7824
H72.18922.77403.46831.02573.09783.78243.7824
H82.18922.77403.09773.46831.02573.78243.7824

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 101.590 P1 O4 H7 101.590
P1 O5 H8 101.590 O2 P1 O3 118.775
O2 P1 O4 118.775 O2 P1 O5 118.775
O3 P1 O4 98.767 O3 P1 O5 98.767
O4 P1 O5 98.767
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.923      
2 O -0.430      
3 O -0.330      
4 O -0.330      
5 O -0.330      
6 H 0.165      
7 H 0.165      
8 H 0.165      


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 1.077 1.077
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.338 0.000 0.000
y 0.000 -28.338 0.000
z 0.000 0.000 -38.838
Traceless
 xyz
x 5.250 0.000 0.000
y 0.000 5.250 0.000
z 0.000 0.000 -10.500
Polar
3z2-r2-21.000
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 3.337 0.000 0.000
y 0.000 3.337 0.000
z 0.000 0.000 3.167


<r2> (average value of r2) Å2
<r2> 124.915
(<r2>)1/2 11.177