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All results from a given calculation for H3PO (Phosphine oxide)

using model chemistry: PBEPBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/3-21G*
 hartrees
Energy at 0K-416.039951
Energy at 298.15K-416.044391
HF Energy-416.039951
Nuclear repulsion energy64.231743
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 PBEPBE/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 A1 2344 2235 97.30      
2 A1 1270 1211 133.89      
3 A1 1129 1077 0.01      
4 E 2306 2198 158.37      
4 E 2306 2198 158.37      
5 E 1076 1026 38.07      
5 E 1076 1026 38.07      
6 E 849 809 24.51      
6 E 849 809 24.51      

Unscaled Zero Point Vibrational Energy (zpe) 6601.9 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 6294.9 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 PBEPBE/3-21G*
ABC
3.50773 0.54865 0.54865

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.387
O2 0.000 0.000 -1.128
H3 0.000 1.261 1.073
H4 -1.092 -0.630 1.073
H5 1.092 -0.630 1.073

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.51521.43541.43541.4354
O21.51522.53682.53682.5368
H31.43542.53682.18372.1837
H41.43542.53682.18372.1837
H51.43542.53682.18372.1837

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 118.555 O2 P1 H4 118.555
O2 P1 H5 118.555 H3 P1 H4 99.048
H3 P1 H5 99.048 H4 P1 H5 99.048
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.404      
2 O -0.416      
3 H 0.004      
4 H 0.004      
5 H 0.004      


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 2.960 2.960
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.267 0.000 0.000
y 0.000 -19.267 0.000
z 0.000 0.000 -21.726
Traceless
 xyz
x 1.229 0.000 0.000
y 0.000 1.229 0.000
z 0.000 0.000 -2.459
Polar
3z2-r2-4.918
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 2.922 0.000 0.000
y 0.000 2.922 0.000
z 0.000 0.000 3.672


<r2> (average value of r2) Å2
<r2> 33.199
(<r2>)1/2 5.762