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

using model chemistry: MP2=FULL/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=FULL/6-311G*
 hartrees
Energy at 0K-417.797813
Energy at 298.15K-417.802316
HF Energy-417.345196
Nuclear repulsion energy65.462873
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=FULL/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 2476 2345 102.09      
2 A1 1331 1260 253.20      
3 A1 1198 1135 1.73      
4 E 2453 2323 151.85      
4 E 2453 2323 151.85      
5 E 1177 1115 49.93      
5 E 1177 1115 49.93      
6 E 894 846 42.15      
6 E 894 846 42.15      

Unscaled Zero Point Vibrational Energy (zpe) 7025.7 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 6654.0 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=FULL/6-311G*
ABC
3.56932 0.57173 0.57173

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.382
O2 0.000 0.000 -1.104
H3 0.000 1.250 1.037
H4 -1.082 -0.625 1.037
H5 1.082 -0.625 1.037

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48611.41101.41101.4110
O21.48612.47912.47912.4791
H31.41102.47912.16482.1648
H41.41102.47912.16482.1648
H51.41102.47912.16482.1648

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 117.655 O2 P1 H4 117.655
O2 P1 H5 117.655 H3 P1 H4 100.187
H3 P1 H5 100.187 H4 P1 H5 100.187
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability