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

using model chemistry: MP3/6-31+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 MP3/6-31+G**
 hartrees
Energy at 0K-417.642648
Energy at 298.15K-417.647141
HF Energy-417.317871
Nuclear repulsion energy65.475046
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 MP3/6-31+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 2557 2380 89.00      
2 A1 1300 1209 298.72      
3 A1 1200 1116 5.77      
4 E 2544 2367 118.37      
4 E 2544 2367 118.37      
5 E 1180 1098 47.83      
5 E 1180 1098 47.83      
6 E 879 818 34.24      
6 E 879 818 34.24      

Unscaled Zero Point Vibrational Energy (zpe) 7131.4 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 6635.7 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 MP3/6-31+G**
ABC
3.57440 0.57116 0.57116

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.386
O2 0.000 0.000 -1.106
H3 0.000 1.249 1.019
H4 -1.082 -0.624 1.019
H5 1.082 -0.624 1.019

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.49141.40011.40011.4001
O21.49142.46412.46412.4641
H31.40012.46412.16322.1632
H41.40012.46412.16322.1632
H51.40012.46412.16322.1632

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 116.869 O2 P1 H4 116.869
O2 P1 H5 116.869 H3 P1 H4 101.163
H3 P1 H5 101.163 H4 P1 H5 101.163
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability