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: M06-2X/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at M06-2X/6-31G*
 hartrees
Energy at 0K-418.273407
Energy at 298.15K-418.277896
HF Energy-418.273407
Nuclear repulsion energy65.489008
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 M06-2X/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 A1 2521 2388 95.93      
2 A1 1321 1251 229.38      
3 A1 1200 1137 1.12      
4 E 2506 2373 146.27      
4 E 2506 2373 147.38      
5 E 1146 1085 48.88      
5 E 1146 1085 48.68      
6 E 894 846 35.40      
6 E 894 846 35.20      

Unscaled Zero Point Vibrational Energy (zpe) 7066.6 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 6692.1 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 M06-2X/6-31G*
ABC
3.55992 0.57250 0.57250

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.382
O2 0.000 0.000 -1.104
H3 0.000 1.251 1.033
H4 -1.084 -0.626 1.033
H5 1.084 -0.626 1.033

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48541.41091.41091.4109
O21.48542.47642.47642.4764
H31.41092.47642.16762.1676
H41.41092.47642.16762.1676
H51.41092.47642.16762.1676

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 117.500 O2 P1 H4 117.500
O2 P1 H5 117.500 H3 P1 H4 100.380
H3 P1 H5 100.380 H4 P1 H5 100.380
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.660      
2 O -0.594      
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 3.776 3.776
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.945 0.000 0.000
y 0.000 -18.945 0.000
z 0.000 0.000 -22.136
Traceless
 xyz
x 1.596 0.000 0.000
y 0.000 1.596 0.000
z 0.000 0.000 -3.192
Polar
3z2-r2-6.383
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 2.952 0.000 0.000
y 0.000 2.932 -0.004
z 0.000 -0.004 3.645


<r2> (average value of r2) Å2
<r2> 32.329
(<r2>)1/2 5.686