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

using model chemistry: B3LYP/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 B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-418.382325
Energy at 298.15K-418.386783
HF Energy-418.382325
Nuclear repulsion energy65.589571
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(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 2401 2317 75.25      
2 A1 1283 1238 155.24      
3 A1 1160 1119 1.38      
4 E 2379 2296 105.41      
4 E 2379 2296 105.42      
5 E 1121 1082 31.02      
5 E 1121 1082 31.03      
6 E 846 817 24.94      
6 E 846 817 24.94      

Unscaled Zero Point Vibrational Energy (zpe) 6767.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 6530.8 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 B3LYP/6-31G(2df,p)
ABC
3.50762 0.57635 0.57635

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.380
O2 0.000 0.000 -1.099
H3 0.000 1.261 1.030
H4 -1.092 -0.630 1.030
H5 1.092 -0.630 1.030

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.47871.41871.41871.4187
O21.47872.47452.47452.4745
H31.41872.47452.18372.1837
H41.41872.47452.18372.1837
H51.41872.47452.18372.1837

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 117.293 O2 P1 H4 117.293
O2 P1 H5 117.293 H3 P1 H4 100.638
H3 P1 H5 100.638 H4 P1 H5 100.638
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.146      
2 O -0.289      
3 H 0.048      
4 H 0.048      
5 H 0.048      


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 3.390 3.390
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.738 0.000 0.000
y 0.000 -18.738 0.000
z 0.000 0.000 -21.664
Traceless
 xyz
x 1.463 0.000 0.000
y 0.000 1.463 0.000
z 0.000 0.000 -2.926
Polar
3z2-r2-5.852
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 3.337 0.000 0.000
y 0.000 3.337 0.000
z 0.000 0.000 3.841


<r2> (average value of r2) Å2
<r2> 32.090
(<r2>)1/2 5.665