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

using model chemistry: MP4/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-417.717687
Energy at 298.15K-417.722107
HF Energy-417.336152
Nuclear repulsion energy63.761093
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 MP4/6-31G*
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 2474 2417        
2 A1 1299 1269        
3 A1 1150 1123        
4 E 2456 2399        
4 E 2456 2399        
5 E 1128 1102        
5 E 1128 1102        
6 E 873 853        
6 E 873 853        

Unscaled Zero Point Vibrational Energy (zpe) 6917.6 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 6757.8 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/aug-cc-pVDZ
ABC
3.43607 0.53988 0.53988

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.399
O2 0.000 0.000 -1.138
H3 0.000 1.274 1.042
H4 -1.103 -0.637 1.042
H5 1.103 -0.637 1.042

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.53661.42711.42711.4271
O21.53662.52492.52492.5249
H31.42712.52492.20642.2064
H41.42712.52492.20642.2064
H51.42712.52492.20642.2064

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 116.799 O2 P1 H4 116.799
O2 P1 H5 116.799 H3 P1 H4 101.250
H3 P1 H5 101.250 H4 P1 H5 101.250
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability