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

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3 1A
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-643.726869
Energy at 298.15K-643.731821
HF Energy-643.726869
Nuclear repulsion energy262.904096
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 B3PW91/6-31G
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 3699 3542 1.83      
2 A 1097 1050 202.52      
3 A 1028 984 67.93      
4 A 690 660 30.56      
5 A 379 363 49.17      
6 A 235 225 245.51      
7 E 3697 3540 146.33      
7 E 3697 3540 146.32      
8 E 1067 1022 57.22      
8 E 1067 1022 57.22      
9 E 793 759 261.90      
9 E 793 759 261.90      
10 E 358 343 88.32      
10 E 358 343 88.32      
11 E 294 282 19.38      
11 E 294 282 19.38      
12 E 73 70 100.31      
12 E 73 70 100.30      

Unscaled Zero Point Vibrational Energy (zpe) 9844.6 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 9428.1 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 B3PW91/6-31G
ABC
0.13495 0.12910 0.12910

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.151
O2 0.000 0.000 1.733
O3 0.000 1.512 -0.630
O4 1.309 -0.756 -0.630
O5 -1.309 -0.756 -0.630
H6 0.688 2.139 -0.333
H7 1.508 -1.666 -0.333
H8 -2.197 -0.473 -0.333

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.58151.70181.70181.70182.29852.29852.2985
O21.58152.80532.80532.80533.05203.05203.0520
O31.70182.80532.61832.61830.97783.52972.9756
O41.70182.80532.61832.61832.97560.97783.5297
O51.70182.80532.61832.61833.52972.97560.9778
H62.29853.05200.97782.97563.52973.89193.8919
H72.29853.05203.52970.97782.97563.89193.8919
H82.29853.05202.97563.52970.97783.89193.8919

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 115.470 P1 O4 H7 115.470
P1 O5 H8 115.470 O2 P1 O3 117.341
O2 P1 O4 117.341 O2 P1 O5 117.341
O3 P1 O4 100.578 O3 P1 O5 100.578
O4 P1 O5 100.578
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 1.398      
2 O -0.598      
3 O -0.701      
4 O -0.701      
5 O -0.701      
6 H 0.434      
7 H 0.434      
8 H 0.434      


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 -0.319 0.319
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.097 0.000 0.000
y 0.000 -29.097 0.000
z 0.000 0.000 -47.679
Traceless
 xyz
x 9.291 0.000 0.000
y 0.000 9.291 0.000
z 0.000 0.000 -18.582
Polar
3z2-r2-37.164
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 4.805 0.000 -0.000
y 0.000 4.805 0.000
z -0.000 0.000 4.825


<r2> (average value of r2) Å2
<r2> 126.264
(<r2>)1/2 11.237