return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2=FULL/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-643.421764
Energy at 298.15K-643.427830
HF Energy-642.217055
Nuclear repulsion energy280.872327
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/cc-pVTZ
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 3882 3685 23.72      
2 A 1344 1276 262.99      
3 A 1048 995 88.08      
4 A 858 815 17.41      
5 A 460 436 19.21      
6 A 322 306 87.84      
7 E 3880 3684 199.74      
7 E 3880 3684 199.74      
8 E 1063 1009 62.70      
8 E 1063 1009 62.70      
9 E 945 898 318.26      
9 E 945 898 318.26      
10 E 462 439 67.01      
10 E 462 439 67.01      
11 E 382 363 40.21      
11 E 382 363 40.21      
12 E 171 162 68.65      
12 E 171 162 68.65      

Unscaled Zero Point Vibrational Energy (zpe) 10859.3 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 10309.8 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/cc-pVTZ
ABC
0.15173 0.14926 0.14926

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

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.116
O2 0.000 0.000 1.585
O3 0.000 1.426 -0.591
O4 1.235 -0.713 -0.591
O5 -1.235 -0.713 -0.591
H6 0.513 2.057 -0.077
H7 1.525 -1.472 -0.077
H8 -2.038 -0.584 -0.077

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.46961.59121.59121.59122.12842.12842.1284
O21.46962.60172.60172.60172.69382.69382.6938
O31.59122.60172.46922.46920.96203.31472.9078
O41.59122.60172.46922.46922.90780.96203.3147
O51.59122.60172.46922.46923.31472.90780.9620
H62.12842.69380.96202.90783.31473.67133.6713
H72.12842.69383.31470.96202.90783.67133.6713
H82.12842.69382.90783.31470.96203.67133.6713

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 110.516 P1 O4 H7 110.516
P1 O5 H8 110.516 O2 P1 O3 116.370
O2 P1 O4 116.370 O2 P1 O5 116.370
O3 P1 O4 101.775 O3 P1 O5 101.775
O4 P1 O5 101.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability