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

using model chemistry: QCISD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3 1A
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-642.923791
Energy at 298.15K-642.929745
HF Energy-642.048629
Nuclear repulsion energy278.140190
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 QCISD/6-31+G**
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 3903 3690 17.79      
2 A 1310 1239 346.13      
3 A 1067 1009 92.93      
4 A 835 789 20.32      
5 A 454 429 36.49      
6 A 332 314 102.20      
7 E 3901 3688 178.36      
7 E 3901 3688 178.36      
8 E 1068 1010 76.13      
8 E 1068 1010 76.13      
9 E 932 881 344.39      
9 E 932 881 344.39      
10 E 453 428 89.96      
10 E 453 428 89.97      
11 E 374 353 36.09      
11 E 374 353 36.09      
12 E 155 147 78.76      
12 E 155 147 78.76      

Unscaled Zero Point Vibrational Energy (zpe) 10833.8 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 10242.3 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 QCISD/6-31+G**
ABC
0.14825 0.14648 0.14648

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

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.117
O2 0.000 0.000 1.598
O3 0.000 1.442 -0.593
O4 1.248 -0.721 -0.593
O5 -1.248 -0.721 -0.593
H6 0.525 2.087 -0.102
H7 1.545 -1.498 -0.102
H8 -2.069 -0.589 -0.102

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.48111.60731.60731.60732.16272.16272.1627
O21.48112.62352.62352.62352.74242.74242.7424
O31.60732.62352.49692.49690.96583.35652.9406
O41.60732.62352.49692.49692.94060.96583.3565
O51.60732.62352.49692.49693.35652.94060.9658
H62.16272.74240.96582.94063.35653.72663.7266
H72.16272.74243.35650.96582.94063.72663.7266
H82.16272.74242.94063.35650.96583.72663.7266

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 111.962 P1 O4 H7 111.962
P1 O5 H8 111.962 O2 P1 O3 116.247
O2 P1 O4 116.247 O2 P1 O5 116.247
O3 P1 O4 101.925 O3 P1 O5 101.925
O4 P1 O5 101.925
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability