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

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3 1A
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-638.788567
Energy at 298.15K-638.794700
HF Energy-638.788567
Nuclear repulsion energy282.962679
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 HF/3-21G*
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 3933 3550 5.98      
2 A 1471 1328 351.06      
3 A 1019 920 257.94      
4 A 964 870 34.12      
5 A 527 476 52.62      
6 A 264 238 231.01      
7 E 3927 3545 233.98      
7 E 3927 3545 233.98      
8 E 1160 1047 200.89      
8 E 1160 1047 200.89      
9 E 956 863 338.58      
9 E 956 863 338.58      
10 E 514 464 169.84      
10 E 514 464 169.84      
11 E 413 373 21.15      
11 E 413 373 21.15      
12 E 145 131 122.29      
12 E 145 131 122.29      

Unscaled Zero Point Vibrational Energy (zpe) 11205.4 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 10114.0 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 HF/3-21G*
ABC
0.15257 0.15257 0.15174

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.112
O2 0.000 0.000 1.565
O3 0.000 1.418 -0.563
O4 1.228 -0.709 -0.563
O5 -1.228 -0.709 -0.563
H6 0.569 2.120 -0.227
H7 1.552 -1.553 -0.227
H8 -2.121 -0.567 -0.227

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.45261.57101.57101.57102.22152.22152.2215
O21.45262.55762.55762.55762.83392.83392.8339
O31.57102.55762.45662.45660.96443.36902.9248
O41.57102.55762.45662.45662.92480.96443.3690
O51.57102.55762.45662.45663.36902.92480.9644
H62.22152.83390.96442.92483.36903.80273.8027
H72.22152.83393.36900.96442.92483.80273.8027
H82.22152.83392.92483.36900.96443.80273.8027

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 120.482 P1 O4 H7 120.482
P1 O5 H8 120.482 O2 P1 O3 115.473
O2 P1 O4 115.473 O2 P1 O5 115.473
O3 P1 O4 102.858 O3 P1 O5 102.858
O4 P1 O5 102.858
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 1.559      
2 O -0.652      
3 O -0.744      
4 O -0.744      
5 O -0.744      
6 H 0.441      
7 H 0.441      
8 H 0.441      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.550 0.550
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.150 0.000 0.000
y 0.000 -26.150 0.000
z 0.000 0.000 -44.936
Traceless
 xyz
x 9.393 0.000 0.000
y 0.000 9.393 0.000
z 0.000 0.000 -18.786
Polar
3z2-r2-37.571
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.091 0.000 0.000
y 0.000 3.091 0.000
z 0.000 0.000 2.642


<r2> (average value of r2) Å2
<r2> 110.534
(<r2>)1/2 10.514