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

using model chemistry: CID/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 CID/6-31G
 hartrees
Energy at 0K-642.215066
Energy at 298.15K-642.220285
HF Energy-641.724257
Nuclear repulsion energy264.957353
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 CID/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 3864 3613 1.64      
2 A 1122 1049 235.22      
3 A 1057 989 105.47      
4 A 745 696 36.61      
5 A 423 395 87.37      
6 A 223 209 317.93      
7 E 3857 3607 222.27      
7 E 3857 3607 222.27      
8 E 1103 1032 82.75      
8 E 1103 1032 82.75      
9 E 847 792 286.49      
9 E 847 792 286.49      
10 E 395 370 122.29      
10 E 395 370 122.29      
11 E 319 299 13.57      
11 E 319 299 13.57      
12 E 81 75 103.81      
12 E 81 75 103.81      

Unscaled Zero Point Vibrational Energy (zpe) 10318.8 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 9650.2 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 CID/6-31G
ABC
0.13642 0.13132 0.13132

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

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.145
O2 0.000 0.000 1.720
O3 0.000 1.502 -0.614
O4 1.301 -0.751 -0.614
O5 -1.301 -0.751 -0.614
H6 0.695 2.139 -0.399
H7 1.505 -1.672 -0.399
H8 -2.201 -0.467 -0.399

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.57501.68341.68341.68342.31462.31462.3146
O21.57502.77642.77642.77643.09093.09093.0909
O31.68342.77642.60182.60180.96763.51952.9610
O41.68342.77642.60182.60182.96100.96763.5195
O51.68342.77642.60182.60183.51952.96100.9676
H62.31463.09090.96762.96103.51953.89653.8965
H72.31463.09093.51950.96762.96103.89653.8965
H82.31463.09092.96103.51950.96763.89653.8965

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 119.162 P1 O4 H7 119.162
P1 O5 H8 119.162 O2 P1 O3 116.835
O2 P1 O4 116.835 O2 P1 O5 116.835
O3 P1 O4 101.205 O3 P1 O5 101.205
O4 P1 O5 101.205
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability