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

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-417.389401
Energy at 298.15K-417.393788
HF Energy-417.182385
Nuclear repulsion energy61.679795
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 MP2/SDD
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 2338 2256 99.45      
2 A1 1220 1178 198.32      
3 A1 999 965 54.41      
4 E 2309 2229 127.50      
4 E 2309 2229 127.50      
5 E 1126 1087 53.47      
5 E 1126 1087 53.47      
6 E 788 760 13.78      
6 E 788 760 13.78      

Unscaled Zero Point Vibrational Energy (zpe) 6500.8 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 6275.2 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 MP2/SDD
ABC
3.42753 0.49705 0.49705

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.422
O2 0.000 0.000 -1.190
H3 0.000 1.275 1.064
H4 -1.105 -0.638 1.064
H5 1.105 -0.638 1.064

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.61251.42791.42791.4279
O21.61252.59022.59022.5902
H31.42792.59022.20912.2091
H41.42792.59022.20912.2091
H51.42792.59022.20912.2091

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 116.717 O2 P1 H4 116.717
O2 P1 H5 116.717 H3 P1 H4 101.351
H3 P1 H5 101.351 H4 P1 H5 101.351
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability