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All results from a given calculation for HPO (Hydrogen phosphorus oxide)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-414.936436
Energy at 298.15K-414.937871
Nuclear repulsion energy47.341108
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 mPW1PW91/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 1974 1885 302.98      
2 A' 1104 1054 18.83      
3 A' 979 934 34.61      

Unscaled Zero Point Vibrational Energy (zpe) 2028.6 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 1936.5 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 mPW1PW91/3-21G
ABC
8.52283 0.62136 0.57914

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.060 -0.510 0.000
O2 0.060 1.067 0.000
H3 -1.379 -0.880 0.000

Atom - Atom Distances (Å)
  P1 O2 H3
P11.57761.4861
O21.57762.4216
H31.48612.4216

picture of Hydrogen phosphorus oxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 P1 H3 104.411
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.621      
2 O -0.514      
3 H -0.106      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.439 -1.962 0.000 2.010
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.619 0.514 0.000
y 0.514 -21.190 0.000
z 0.000 0.000 -16.959
Traceless
 xyz
x -0.545 0.514 0.000
y 0.514 -2.901 0.000
z 0.000 0.000 3.446
Polar
3z2-r26.892
x2-y21.571
xy0.514
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 27.806
(<r2>)1/2 5.273