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

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-418.283303
Energy at 298.15K-418.287766
HF Energy-418.283303
Nuclear repulsion energy65.140645
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 B3PW91/6-31G**
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 2430 2329 102.76      
2 A1 1288 1235 190.17      
3 A1 1170 1122 0.28      
4 E 2407 2306 154.47      
4 E 2407 2306 154.47      
5 E 1110 1064 43.89      
5 E 1110 1064 43.89      
6 E 863 827 28.65      
6 E 863 827 28.65      

Unscaled Zero Point Vibrational Energy (zpe) 6823.6 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 6539.7 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 B3PW91/6-31G**
ABC
3.52173 0.56655 0.56655

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.383
O2 0.000 0.000 -1.109
H3 0.000 1.258 1.042
H4 -1.090 -0.629 1.042
H5 1.090 -0.629 1.042

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.49241.42041.42041.4204
O21.49242.49232.49232.4923
H31.42042.49232.17942.1794
H41.42042.49232.17942.1794
H51.42042.49232.17942.1794

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 117.643 O2 P1 H4 117.643
O2 P1 H5 117.643 H3 P1 H4 100.202
H3 P1 H5 100.202 H4 P1 H5 100.202
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.693      
2 O -0.559      
3 H -0.045      
4 H -0.045      
5 H -0.045      


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 3.619 3.619
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.885 0.000 0.000
y 0.000 -18.885 0.000
z 0.000 0.000 -21.926
Traceless
 xyz
x 1.521 0.000 0.000
y 0.000 1.521 0.000
z 0.000 0.000 -3.041
Polar
3z2-r2-6.083
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 3.070 0.000 0.000
y 0.000 3.070 0.000
z 0.000 0.000 3.841


<r2> (average value of r2) Å2
<r2> 32.481
(<r2>)1/2 5.699