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

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3 1A
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-640.706526
Energy at 298.15K-640.712431
HF Energy-640.706526
Nuclear repulsion energy278.774041
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 B3PW91/3-21G*
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 3610 3463 0.35      
2 A 1373 1317 229.31      
3 A 981 941 145.98      
4 A 862 827 38.43      
5 A 474 455 45.98      
6 A 299 287 178.90      
7 E 3609 3463 100.88      
7 E 3609 3463 100.89      
8 E 1081 1037 99.09      
8 E 1081 1037 99.09      
9 E 903 866 331.12      
9 E 903 866 331.12      
10 E 453 435 95.71      
10 E 453 435 95.70      
11 E 376 361 25.94      
11 E 376 361 25.94      
12 E 151 145 98.04      
12 E 151 145 98.04      

Unscaled Zero Point Vibrational Energy (zpe) 10373.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 9952.0 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 B3PW91/3-21G*
ABC
0.14962 0.14732 0.14732

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

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 1.601
O3 0.000 1.431 -0.586
O4 1.239 -0.715 -0.586
O5 -1.239 -0.715 -0.586
H6 0.617 2.100 -0.201
H7 1.510 -1.584 -0.201
H8 -2.127 -0.516 -0.201

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.47761.59701.59701.59702.21212.21212.2121
O21.47762.61372.61372.61372.83472.83472.8347
O31.59702.61372.47772.47770.98813.39322.9084
O41.59702.61372.47772.47772.90840.98813.3932
O51.59702.61372.47772.47773.39322.90840.9881
H62.21212.83470.98812.90843.39323.79003.7900
H72.21212.83473.39320.98812.90843.79003.7900
H82.21212.83472.90843.39320.98813.79003.7900

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 115.665 P1 O4 H7 115.665
P1 O5 H8 115.665 O2 P1 O3 116.392
O2 P1 O4 116.392 O2 P1 O5 116.392
O3 P1 O4 101.748 O3 P1 O5 101.748
O4 P1 O5 101.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 1.141      
2 O -0.513      
3 O -0.613      
4 O -0.613      
5 O -0.613      
6 H 0.404      
7 H 0.404      
8 H 0.404      


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 -0.207 0.207
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.539 0.000 0.000
y 0.000 -26.539 0.000
z 0.000 0.000 -43.561
Traceless
 xyz
x 8.511 0.000 0.000
y 0.000 8.511 0.000
z 0.000 0.000 -17.022
Polar
3z2-r2-34.044
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 3.739 0.000 0.000
y 0.000 3.739 0.000
z 0.000 0.000 3.239


<r2> (average value of r2) Å2
<r2> 112.707
(<r2>)1/2 10.616