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

using model chemistry: MP4=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP4=FULL/cc-pVDZ
 hartrees
Energy at 0K-417.685385
Energy at 298.15K-417.689841
HF Energy-417.320152
Nuclear repulsion energy64.326486
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 MP4=FULL/cc-pVDZ
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 2459 2373        
2 A1 1262 1218        
3 A1 1126 1087        
4 E 2440 2355        
4 E 2440 2355        
5 E 1142 1102        
5 E 1142 1102        
6 E 838 809        
6 E 838 809        

Unscaled Zero Point Vibrational Energy (zpe) 6842.9 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 6604.1 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 MP4=FULL/cc-pVDZ
ABC
3.52448 0.54960 0.54960

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.390
O2 0.000 0.000 -1.128
H3 0.000 1.258 1.059
H4 -1.089 -0.629 1.059
H5 1.089 -0.629 1.059

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.51731.42501.42501.4250
O21.51732.52292.52292.5229
H31.42502.52292.17852.1785
H41.42502.52292.17852.1785
H51.42502.52292.17852.1785

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 118.036 O2 P1 H4 118.036
O2 P1 H5 118.036 H3 P1 H4 99.707
H3 P1 H5 99.707 H4 P1 H5 99.707
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability