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

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-418.336438
Energy at 298.15K-418.340909
HF Energy-418.336438
Nuclear repulsion energy65.281791
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 mPW1PW91/6-31G**
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 2456 2337 99.07      
2 A1 1297 1234 195.99      
3 A1 1180 1123 0.16      
4 E 2433 2315 149.96      
4 E 2433 2315 149.97      
5 E 1119 1064 44.45      
5 E 1119 1064 44.45      
6 E 869 827 29.95      
6 E 869 827 29.95      

Unscaled Zero Point Vibrational Energy (zpe) 6886.8 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 6552.8 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 mPW1PW91/6-31G**
ABC
3.53419 0.56907 0.56907

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

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 -1.107
H3 0.000 1.256 1.039
H4 -1.088 -0.628 1.039
H5 1.088 -0.628 1.039

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48921.41721.41721.4172
O21.48922.48622.48622.4862
H31.41722.48622.17552.1755
H41.41722.48622.17552.1755
H51.41722.48622.17552.1755

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 117.594 O2 P1 H4 117.594
O2 P1 H5 117.594 H3 P1 H4 100.263
H3 P1 H5 100.263 H4 P1 H5 100.263
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.700      
2 O -0.568      
3 H -0.044      
4 H -0.044      
5 H -0.044      


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 3.664 3.664
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.857 0.000 0.000
y 0.000 -18.857 0.000
z 0.000 0.000 -21.941
Traceless
 xyz
x 1.542 0.000 0.000
y 0.000 1.542 0.000
z 0.000 0.000 -3.083
Polar
3z2-r2-6.167
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 3.045 0.000 0.000
y 0.000 3.045 0.000
z 0.000 0.000 3.797


<r2> (average value of r2) Å2
<r2> 32.384
(<r2>)1/2 5.691