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: wB97X-D/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at wB97X-D/TZVP
 hartrees
Energy at 0K-418.367238
Energy at 298.15K-418.371698
HF Energy-418.367238
Nuclear repulsion energy65.093602
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 wB97X-D/TZVP
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 2393 2285 80.14      
2 A1 1260 1204 226.22      
3 A1 1162 1110 1.16      
4 E 2373 2266 109.62      
4 E 2373 2266 109.58      
5 E 1134 1083 31.47      
5 E 1134 1083 31.50      
6 E 841 803 31.29      
6 E 841 803 31.22      

Unscaled Zero Point Vibrational Energy (zpe) 6755.6 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 6451.6 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 wB97X-D/TZVP
ABC
3.49222 0.56621 0.56621

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/TZVP

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 -1.105
H3 0.000 1.265 1.031
H4 -1.095 -0.632 1.031
H5 1.095 -0.632 1.031

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48851.42091.42091.4209
O21.48852.48242.48242.4824
H31.42092.48242.19052.1905
H41.42092.48242.19052.1906
H51.42092.48242.19052.1906

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 117.117 O2 P1 H4 117.117
O2 P1 H5 117.117 H3 P1 H4 100.857
H3 P1 H5 100.857 H4 P1 H5 100.857
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.575      
2 O -0.531      
3 H -0.015      
4 H -0.015      
5 H -0.015      


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 4.020 4.020
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.947 0.000 0.000
y 0.000 -18.947 0.000
z 0.000 0.000 -22.711
Traceless
 xyz
x 1.882 0.000 0.000
y 0.000 1.882 0.000
z 0.000 0.000 -3.764
Polar
3z2-r2-7.528
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 3.384 0.000 0.000
y 0.000 3.384 -0.001
z 0.000 -0.001 4.343


<r2> (average value of r2) Å2
<r2> 32.675
(<r2>)1/2 5.716