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

using model chemistry: MP2/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-642.905908
Energy at 298.15K-642.911791
HF Energy-642.039243
Nuclear repulsion energy275.359881
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/cc-pVDZ
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 3844 3662 24.23      
2 A 1312 1249 256.81      
3 A 1071 1020 58.08      
4 A 814 776 15.93      
5 A 440 419 31.21      
6 A 310 295 76.01      
7 E 3842 3660 168.74      
7 E 3842 3660 168.74      
8 E 1072 1021 63.27      
8 E 1072 1021 63.27      
9 E 925 881 310.79      
9 E 925 881 310.79      
10 E 440 419 74.29      
10 E 440 419 74.29      
11 E 366 349 41.20      
11 E 366 349 41.20      
12 E 154 147 70.65      
12 E 154 147 70.65      

Unscaled Zero Point Vibrational Energy (zpe) 10694.0 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 10186.1 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/cc-pVDZ
ABC
0.14645 0.14295 0.14295

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

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.126
O2 0.000 0.000 1.620
O3 0.000 1.454 -0.610
O4 1.259 -0.727 -0.610
O5 -1.259 -0.727 -0.610
H6 0.526 2.062 -0.068
H7 1.523 -1.487 -0.068
H8 -2.049 -0.576 -0.068

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.49421.62961.62961.62962.13742.13742.1374
O21.49422.66252.66252.66252.71692.71692.7169
O31.62962.66252.51802.51800.97033.35582.9345
O41.62962.66252.51802.51802.93450.97033.3558
O51.62962.66252.51802.51803.35582.93450.9703
H62.13742.71690.97032.93453.35583.68683.6868
H72.13742.71693.35580.97032.93453.68683.6868
H82.13742.71692.93453.35580.97033.68683.6868

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 107.890 P1 O4 H7 107.890
P1 O5 H8 107.890 O2 P1 O3 116.864
O2 P1 O4 116.864 O2 P1 O5 116.864
O3 P1 O4 101.169 O3 P1 O5 101.169
O4 P1 O5 101.169
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability