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 H3PO (Phosphine oxide)

using model chemistry: HSEh1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-418.158407
Energy at 298.15K 
HF Energy-418.158407
Nuclear repulsion energy65.130918
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 HSEh1PBE/6-31+G**
Rotational Constants (cm-1) from geometry optimized at HSEh1PBE/6-31+G**
ABC
3.49715 0.56681 0.56681

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.385
O2 0.000 0.000 -1.109
H3 0.000 1.263 1.031
H4 -1.094 -0.631 1.031
H5 1.094 -0.631 1.031

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.49401.41841.41841.4184
O21.49402.48492.48492.4849
H31.41842.48492.18702.1870
H41.41842.48492.18702.1870
H51.41842.48492.18702.1870

picture of Phosphine oxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 P1 H3 117.102 O2 P1 H4 117.102
O2 P1 H5 117.102 H3 P1 H4 100.875
H3 P1 H5 100.875 H4 P1 H5 100.875
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.738      
2 O -0.673      
3 H -0.022      
4 H -0.022      
5 H -0.022      


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 4.063 4.063
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.172 0.000 0.000
y 0.000 -19.172 0.000
z 0.000 0.000 -22.895
Traceless
 xyz
x 1.861 0.000 0.000
y 0.000 1.861 0.000
z 0.000 0.000 -3.723
Polar
3z2-r2-7.445
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 3.445 0.000 0.000
y 0.000 3.445 0.000
z 0.000 0.000 4.545


<r2> (average value of r2) Å2
<r2> 32.784
(<r2>)1/2 5.726