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

using model chemistry: mPW1PW91/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-418.357308
Energy at 298.15K-418.361770
HF Energy-418.357308
Nuclear repulsion energy65.735798
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(2df,p)
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 2434 2323 71.44      
2 A1 1293 1234 155.10      
3 A1 1162 1110 3.67      
4 E 2415 2305 98.91      
4 E 2415 2305 98.92      
5 E 1122 1071 29.27      
5 E 1122 1071 29.27      
6 E 850 811 25.79      
6 E 850 811 25.79      

Unscaled Zero Point Vibrational Energy (zpe) 6830.6 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 6521.2 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(2df,p)
ABC
3.51503 0.57920 0.57920

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.379
O2 0.000 0.000 -1.096
H3 0.000 1.259 1.028
H4 -1.091 -0.630 1.028
H5 1.091 -0.630 1.028

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.47481.41691.41691.4169
O21.47482.46932.46932.4693
H31.41692.46932.18142.1814
H41.41692.46932.18142.1814
H51.41692.46932.18142.1814

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 117.268 O2 P1 H4 117.268
O2 P1 H5 117.268 H3 P1 H4 100.669
H3 P1 H5 100.669 H4 P1 H5 100.669
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.135      
2 O -0.312      
3 H 0.059      
4 H 0.059      
5 H 0.059      


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 3.426 3.426
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.597 0.000 0.000
y 0.000 -18.597 0.000
z 0.000 0.000 -21.545
Traceless
 xyz
x 1.474 0.000 0.000
y 0.000 1.474 0.000
z 0.000 0.000 -2.948
Polar
3z2-r2-5.897
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 3.333 0.000 0.000
y 0.000 3.333 0.000
z 0.000 0.000 3.815


<r2> (average value of r2) Å2
<r2> 31.919
(<r2>)1/2 5.650