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

using model chemistry: QCISD/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 QCISD/cc-pVTZ
 hartrees
Energy at 0K-643.329085
Energy at 298.15K-643.335189
HF Energy-642.217883
Nuclear repulsion energy281.159950
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/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 3903 3729 23.51      
2 A 1356 1296 282.87      
3 A 1074 1026 89.40      
4 A 870 831 14.71      
5 A 464 444 19.44      
6 A 319 304 86.87      
7 E 3900 3727 181.01      
7 E 3900 3727 181.01      
8 E 1084 1036 65.67      
8 E 1084 1036 65.67      
9 E 963 920 319.17      
9 E 963 920 319.17      
10 E 469 448 75.09      
10 E 469 448 75.09      
11 E 384 367 38.40      
11 E 384 367 38.40      
12 E 171 164 68.77      
12 E 171 164 68.77      

Unscaled Zero Point Vibrational Energy (zpe) 10963.7 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 10475.8 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 QCISD/cc-pVTZ
ABC
0.15147 0.14978 0.14978

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

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.113
O2 0.000 0.000 1.579
O3 0.000 1.427 -0.588
O4 1.236 -0.713 -0.588
O5 -1.236 -0.713 -0.588
H6 0.508 2.061 -0.076
H7 1.531 -1.470 -0.076
H8 -2.039 -0.591 -0.076

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.46611.58981.58981.58982.13082.13082.1308
O21.46612.59482.59482.59482.69172.69172.6917
O31.58982.59482.47122.47120.96013.31622.9133
O41.58982.59482.47122.47122.91330.96013.3162
O51.58982.59482.47122.47123.31622.91330.9601
H62.13082.69170.96012.91333.31623.67613.6761
H72.13082.69173.31620.96012.91333.67613.6761
H82.13082.69172.91333.31620.96013.67613.6761

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 110.946 P1 O4 H7 110.946
P1 O5 H8 110.946 O2 P1 O3 116.175
O2 P1 O4 116.175 O2 P1 O5 116.175
O3 P1 O4 102.013 O3 P1 O5 102.013
O4 P1 O5 102.013
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability