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

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-417.655697
Energy at 298.15K-417.660200
HF Energy-417.345166
Nuclear repulsion energy65.450032
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 MP2/6-311G*
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 2477 2353 102.41      
2 A1 1331 1264 253.76      
3 A1 1198 1138 2.04      
4 E 2453 2331 152.33      
4 E 2453 2331 152.33      
5 E 1178 1120 50.15      
5 E 1178 1120 50.15      
6 E 894 850 42.21      
6 E 894 850 42.21      

Unscaled Zero Point Vibrational Energy (zpe) 7027.7 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 6678.5 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 MP2/6-311G*
ABC
3.56984 0.57144 0.57144

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

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 -1.102
H3 0.000 1.250 1.037
H4 -1.083 -0.625 1.037
H5 1.083 -0.625 1.037

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48211.41201.41201.4120
O21.48212.47722.47722.4772
H31.41202.47722.16512.1651
H41.41202.47722.16512.1651
H51.41202.47722.16512.1651

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 117.715 O2 P1 H4 117.715
O2 P1 H5 117.715 H3 P1 H4 100.111
H3 P1 H5 100.111 H4 P1 H5 100.111
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability