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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31+G**
 hartrees
Energy at 0K-642.936405
Energy at 298.15K-642.942329
HF Energy-642.047727
Nuclear repulsion energy277.845255
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/6-31+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 3876 3640 18.94      
2 A 1307 1227 335.45      
3 A 1050 986 95.23      
4 A 831 780 23.32      
5 A 449 422 34.59      
6 A 333 313 103.92      
7 E 3875 3639 200.27      
7 E 3875 3639 200.27      
8 E 1053 989 74.24      
8 E 1053 989 74.24      
9 E 925 869 349.29      
9 E 925 869 349.29      
10 E 449 421 81.46      
10 E 449 421 81.46      
11 E 373 350 39.74      
11 E 373 350 39.74      
12 E 153 144 79.51      
12 E 153 144 79.51      

Unscaled Zero Point Vibrational Energy (zpe) 10749.4 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 10095.9 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/6-31+G**
ABC
0.14849 0.14596 0.14596

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

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 1.605
O3 0.000 1.440 -0.596
O4 1.247 -0.720 -0.596
O5 -1.247 -0.720 -0.596
H6 0.525 2.085 -0.102
H7 1.543 -1.498 -0.102
H8 -2.069 -0.588 -0.102

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.48591.60821.60821.60822.16182.16182.1618
O21.48592.63052.63052.63052.74542.74542.7454
O31.60822.63052.49472.49470.96783.35532.9388
O41.60822.63052.49472.49472.93880.96783.3553
O51.60822.63052.49472.49473.35532.93880.9678
H62.16182.74540.96782.93883.35533.72483.7248
H72.16182.74543.35530.96782.93883.72483.7248
H82.16182.74542.93883.35530.96783.72483.7248

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 111.695 P1 O4 H7 111.695
P1 O5 H8 111.695 O2 P1 O3 116.410
O2 P1 O4 116.410 O2 P1 O5 116.410
O3 P1 O4 101.726 O3 P1 O5 101.726
O4 P1 O5 101.726
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability