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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-642.869552
Energy at 298.15K-642.875489
HF Energy-642.013459
Nuclear repulsion energy278.075008
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 3776 3558 19.38      
2 A 1347 1270 295.00      
3 A 1089 1026 104.75      
4 A 838 790 17.67      
5 A 463 436 39.64      
6 A 319 301 108.23      
7 E 3774 3556 187.70      
7 E 3774 3556 187.70      
8 E 1100 1037 94.24      
8 E 1100 1037 94.24      
9 E 952 897 335.98      
9 E 952 897 335.98      
10 E 455 429 91.01      
10 E 455 429 91.01      
11 E 378 356 35.56      
11 E 378 356 35.56      
12 E 148 140 83.85      
12 E 148 140 83.85      

Unscaled Zero Point Vibrational Energy (zpe) 10723.8 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 10103.9 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
0.14866 0.14638 0.14638

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 0.119
O2 0.000 0.000 1.600
O3 0.000 1.440 -0.596
O4 1.247 -0.720 -0.596
O5 -1.247 -0.720 -0.596
H6 0.546 2.072 -0.093
H7 1.521 -1.508 -0.093
H8 -2.067 -0.563 -0.093

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.48071.60801.60801.60802.15302.15302.1530
O21.48072.62632.62632.62632.73092.73092.7308
O31.60802.62632.49442.49440.97453.35582.9223
O41.60802.62632.49442.49442.92230.97453.3558
O51.60802.62632.49442.49443.35582.92230.9745
H62.15302.73090.97452.92233.35583.71093.7109
H72.15302.73093.35580.97452.92233.71093.7109
H82.15302.73082.92233.35580.97453.71093.7109

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 110.545 P1 O4 H7 110.545
P1 O5 H8 110.545 O2 P1 O3 116.418
O2 P1 O4 116.418 O2 P1 O5 116.418
O3 P1 O4 101.716 O3 P1 O5 101.716
O4 P1 O5 101.716
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability