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

using model chemistry: MP2=FULL/aug-cc-pV(T+d)Z

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/aug-cc-pV(T+d)Z
 hartrees
Energy at 0K-417.941489
Energy at 298.15K-417.946046
HF Energy-417.401601
Nuclear repulsion energy65.831662
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/aug-cc-pV(T+d)Z
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 2511 2511 73.75      
2 A1 1267 1267 178.01      
3 A1 1166 1166 0.66      
4 E 2498 2498 72.78      
4 E 2498 2498 72.78      
5 E 1170 1170 24.34      
5 E 1170 1170 24.34      
6 E 854 854 22.88      
6 E 854 854 22.88      

Unscaled Zero Point Vibrational Energy (zpe) 6994.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6994.7 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 MP2=FULL/aug-cc-pV(T+d)Z
ABC
3.59174 0.57828 0.57828

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pV(T+d)Z

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 -1.098
H3 0.000 1.246 1.017
H4 -1.079 -0.623 1.017
H5 1.079 -0.623 1.017

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48061.39801.39801.3980
O21.48062.45452.45452.4545
H31.39802.45452.15802.1580
H41.39802.45452.15802.1580
H51.39802.45452.15802.1580

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 116.975 O2 P1 H4 116.975
O2 P1 H5 116.975 H3 P1 H4 101.033
H3 P1 H5 101.033 H4 P1 H5 101.033
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability