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

using model chemistry: MP3/TZVP

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/TZVP
 hartrees
Energy at 0K-417.707720
Energy at 298.15K-417.712203
HF Energy-417.360528
Nuclear repulsion energy65.381131
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/TZVP
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 2515 2352 76.73      
2 A1 1282 1199 264.19      
3 A1 1192 1115 0.00      
4 E 2497 2336 114.18      
4 E 2497 2336 114.18      
5 E 1183 1106 40.81      
5 E 1183 1106 40.81      
6 E 854 798 38.38      
6 E 854 798 38.38      

Unscaled Zero Point Vibrational Energy (zpe) 7028.1 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 6572.6 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/TZVP
ABC
3.54731 0.57035 0.57035

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.384
O2 0.000 0.000 -1.106
H3 0.000 1.254 1.027
H4 -1.086 -0.627 1.027
H5 1.086 -0.627 1.027

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.49031.40861.40861.4086
O21.49032.47372.47372.4737
H31.40862.47372.17152.1715
H41.40862.47372.17152.1715
H51.40862.47372.17152.1715

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 117.124 O2 P1 H4 117.124
O2 P1 H5 117.124 H3 P1 H4 100.848
H3 P1 H5 100.848 H4 P1 H5 100.848
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability