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

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-418.362263
Energy at 298.15K-418.366728
HF Energy-418.362263
Nuclear repulsion energy65.077216
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 B3LYP/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 2418 2323 100.55      
2 A1 1289 1238 187.75      
3 A1 1167 1121 1.99      
4 E 2393 2299 155.72      
4 E 2393 2299 155.72      
5 E 1113 1070 45.08      
5 E 1113 1070 45.08      
6 E 865 831 28.66      
6 E 865 831 28.67      

Unscaled Zero Point Vibrational Energy (zpe) 6807.2 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 6540.4 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 B3LYP/6-31G**
ABC
3.51924 0.56527 0.56527

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.384
O2 0.000 0.000 -1.111
H3 0.000 1.259 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
P11.49441.42051.42051.4205
O21.49442.49372.49372.4937
H31.42052.49372.18012.1801
H41.42052.49372.18012.1801
H51.42052.49372.18012.1801

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 117.611 O2 P1 H4 117.611
O2 P1 H5 117.611 H3 P1 H4 100.242
H3 P1 H5 100.242 H4 P1 H5 100.242
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.710      
2 O -0.556      
3 H -0.051      
4 H -0.051      
5 H -0.051      


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 3.609 3.609
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.969 0.000 0.000
y 0.000 -18.969 0.000
z 0.000 0.000 -22.009
Traceless
 xyz
x 1.520 0.000 0.000
y 0.000 1.520 0.000
z 0.000 0.000 -3.040
Polar
3z2-r2-6.080
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 3.060 0.000 0.000
y 0.000 3.060 0.000
z 0.000 0.000 3.830


<r2> (average value of r2) Å2
<r2> 32.569
(<r2>)1/2 5.707