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

using model chemistry: MP2=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-417.649939
Energy at 298.15K-417.654425
HF Energy-417.317076
Nuclear repulsion energy65.122030
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/6-31+G**
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 2562 2406 105.21      
2 A1 1298 1219 276.77      
3 A1 1177 1105 8.71      
4 E 2550 2395 126.85      
4 E 2550 2395 126.85      
5 E 1180 1109 48.54      
5 E 1180 1109 48.54      
6 E 870 817 28.70      
6 E 870 817 28.70      

Unscaled Zero Point Vibrational Energy (zpe) 7118.1 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 6685.3 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/6-31+G**
ABC
3.58030 0.56350 0.56350

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.389
O2 0.000 0.000 -1.114
H3 0.000 1.248 1.025
H4 -1.081 -0.624 1.025
H5 1.081 -0.624 1.025

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.50281.40061.40061.4006
O21.50282.47612.47612.4761
H31.40062.47612.16152.1615
H41.40062.47612.16152.1615
H51.40062.47612.16152.1615

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 116.999 O2 P1 H4 116.999
O2 P1 H5 116.999 H3 P1 H4 101.003
H3 P1 H5 101.003 H4 P1 H5 101.003
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability