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

using model chemistry: CCD/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 CCD/6-31G
 hartrees
Energy at 0K-642.295595
Energy at 298.15K-642.300682
HF Energy-641.720748
Nuclear repulsion energy262.634159
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 CCD/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 3725 3574 2.66      
2 A 1102 1057 241.48      
3 A 1058 1015 65.41      
4 A 712 683 31.99      
5 A 407 390 75.23      
6 A 223 214 291.84      
7 E 3722 3572 161.56      
7 E 3722 3572 161.56      
8 E 1098 1054 70.83      
8 E 1098 1054 70.83      
9 E 819 786 260.95      
9 E 819 786 260.95      
10 E 381 365 111.56      
10 E 381 365 111.57      
11 E 307 295 11.58      
11 E 307 295 11.58      
12 E 74 71 99.41      
12 E 74 71 99.41      

Unscaled Zero Point Vibrational Energy (zpe) 10014.0 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 9608.4 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 CCD/6-31G
ABC
0.13429 0.12895 0.12895

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

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.150
O2 0.000 0.000 1.735
O3 0.000 1.515 -0.624
O4 1.312 -0.758 -0.624
O5 -1.312 -0.758 -0.624
H6 0.712 2.141 -0.387
H7 1.498 -1.687 -0.387
H8 -2.210 -0.454 -0.387

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.58501.70131.70131.70132.31922.31922.3192
O21.58502.80362.80362.80363.09723.09723.0972
O31.70132.80362.62412.62410.97713.54312.9695
O41.70132.80362.62412.62412.96950.97713.5431
O51.70132.80362.62412.62413.54312.96950.9771
H62.31923.09720.97712.96953.54313.90793.9079
H72.31923.09723.54310.97712.96953.90793.9079
H82.31923.09722.96953.54310.97713.90793.9079

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 117.395 P1 O4 H7 117.395
P1 O5 H8 117.395 O2 P1 O3 117.062
O2 P1 O4 117.062 O2 P1 O5 117.062
O3 P1 O4 100.925 O3 P1 O5 100.925
O4 P1 O5 100.925
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability