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

using model chemistry: QCISD(T)/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 QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-642.943266
Energy at 298.15K-642.949130
HF Energy-642.038978
Nuclear repulsion energy275.102638
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 QCISD(T)/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3833 3653        
2 A 1297 1236        
3 A 1076 1026        
4 A 805 767        
5 A 439 418        
6 A 312 297        
7 E 3831 3652        
7 E 3831 3651        
8 E 1080 1030        
8 E 1079 1028        
9 E 922 878        
9 E 921 878        
10 E 435 415        
10 E 435 415        
11 E 364 347        
11 E 362 345        
12 E 155 148        
12 E 151 144        

Unscaled Zero Point Vibrational Energy (zpe) 10663.8 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 10163.7 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 QCISD(T)/cc-pVDZ
ABC
0.14603 0.14273 0.14273

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVDZ

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.127
O2 0.000 0.000 1.621
O3 0.000 1.456 -0.610
O4 1.261 -0.728 -0.610
O5 -1.261 -0.728 -0.610
H6 0.538 2.061 -0.076
H7 1.516 -1.497 -0.076
H8 -2.054 -0.565 -0.076

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.49431.63161.63161.63162.14012.14012.1401
O21.49432.66392.66392.66392.72362.72362.7236
O31.63162.66392.52182.52180.97033.36202.9306
O41.63162.66392.52182.52182.93060.97033.3620
O51.63162.66392.52182.52183.36202.93060.9703
H62.14012.72360.97032.93063.36203.69023.6902
H72.14012.72363.36200.97032.93063.69023.6902
H82.14012.72362.93063.36200.97033.69023.6902

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 107.961 P1 O4 H7 107.961
P1 O5 H8 107.962 O2 P1 O3 116.834
O2 P1 O4 116.834 O2 P1 O5 116.834
O3 P1 O4 101.207 O3 P1 O5 101.207
O4 P1 O5 101.207
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability