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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G
 hartrees
Energy at 0K-642.312848
Energy at 298.15K-642.317862
HF Energy-641.718659
Nuclear repulsion energy261.746982
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 MP2=FULL/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 3677 3493 4.93      
2 A 1136 1079 229.17      
3 A 1045 993 93.67      
4 A 698 663 43.86      
5 A 398 378 58.49      
6 A 225 214 288.22      
7 E 3675 3491 168.08      
7 E 3675 3491 168.08      
8 E 1082 1028 68.23      
8 E 1082 1028 68.23      
9 E 795 756 270.57      
9 E 795 756 270.57      
10 E 376 357 95.31      
10 E 376 357 95.31      
11 E 303 288 11.41      
11 E 303 288 11.41      
12 E 68 65 99.37      
12 E 68 65 99.37      

Unscaled Zero Point Vibrational Energy (zpe) 9886.7 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 9393.4 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 MP2=FULL/6-31G
ABC
0.13369 0.12797 0.12797

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.157
O2 0.000 0.000 1.741
O3 0.000 1.519 -0.629
O4 1.315 -0.759 -0.629
O5 -1.315 -0.759 -0.629
H6 0.724 2.136 -0.392
H7 1.488 -1.695 -0.392
H8 -2.212 -0.441 -0.392

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.58381.71041.71041.71042.32132.32132.3213
O21.58382.81522.81522.81523.10413.10413.1041
O31.71042.81522.63092.63090.98093.54992.9647
O41.71042.81522.63092.63092.96470.98093.5499
O51.71042.81522.63092.63093.54992.96470.9809
H62.32133.10410.98092.96473.54993.90673.9067
H72.32133.10413.54990.98092.96473.90673.9067
H82.32133.10412.96473.54990.98093.90673.9067

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 116.569 P1 O4 H7 116.569
P1 O5 H8 116.569 O2 P1 O3 117.373
O2 P1 O4 117.373 O2 P1 O5 117.373
O3 P1 O4 100.539 O3 P1 O5 100.539
O4 P1 O5 100.539
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability