return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: LSDA/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 LSDA/6-31G
 hartrees
Energy at 0K-641.490504
Energy at 298.15K-641.495364
HF Energy-641.490504
Nuclear repulsion energy263.505280
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 LSDA/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 3577 3504 3.34      
2 A 1107 1085 162.28      
3 A 983 963 90.20      
4 A 688 674 31.77      
5 A 367 360 44.19      
6 A 248 243 234.32      
7 E 3575 3503 135.34      
7 E 3575 3503 135.33      
8 E 1028 1007 51.37      
8 E 1028 1007 51.37      
9 E 782 766 263.69      
9 E 782 766 263.71      
10 E 347 340 78.98      
10 E 347 340 78.98      
11 E 288 283 20.69      
11 E 288 283 20.68      
12 E 64 63 98.28      
12 E 64 63 98.28      

Unscaled Zero Point Vibrational Energy (zpe) 9569.0 cm-1
Scaled (by 0.9797) Zero Point Vibrational Energy (zpe) 9374.7 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 LSDA/6-31G
ABC
0.13646 0.12958 0.12958

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

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.154
O2 0.000 0.000 1.733
O3 0.000 1.502 -0.633
O4 1.301 -0.751 -0.633
O5 -1.301 -0.751 -0.633
H6 0.694 2.135 -0.324
H7 1.502 -1.669 -0.324
H8 -2.197 -0.467 -0.324

Atom - Atom Distances (Å)
  P1 O2 O3 O4 O5 H6 H7 H8
P11.57921.69611.69611.69612.29572.29572.2957
O21.57922.80302.80302.80303.04513.04513.0451
O31.69612.80302.60202.60200.98943.52272.9659
O41.69612.80302.60202.60202.96590.98943.5227
O51.69612.80302.60202.60203.52272.96590.9894
H62.29573.04510.98942.96593.52273.88933.8893
H72.29573.04513.52270.98942.96593.88933.8893
H82.29573.04512.96593.52270.98943.88933.8893

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 114.935 P1 O4 H7 114.935
P1 O5 H8 114.935 O2 P1 O3 117.658
O2 P1 O4 117.658 O2 P1 O5 117.658
O3 P1 O4 100.182 O3 P1 O5 100.182
O4 P1 O5 100.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 1.146      
2 O -0.521      
3 O -0.643      
4 O -0.643      
5 O -0.643      
6 H 0.435      
7 H 0.435      
8 H 0.435      


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 -0.212 0.212
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.957 0.000 0.000
y 0.000 -28.957 0.000
z 0.000 0.000 -47.268
Traceless
 xyz
x 9.155 0.000 0.000
y 0.000 9.155 0.000
z 0.000 0.000 -18.311
Polar
3z2-r2-36.622
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 5.059 0.000 0.000
y 0.000 5.058 0.000
z 0.000 0.000 5.014


<r2> (average value of r2) Å2
<r2> 125.513
(<r2>)1/2 11.203