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

using model chemistry: QCISD(T)/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 QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-417.674080
Energy at 298.15K-417.678534
HF Energy-417.320345
Nuclear repulsion energy64.394660
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 QCISD(T)/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2441 2326        
2 A1 1255 1196        
3 A1 1131 1078        
4 E 2419 2306        
4 E 2419 2305        
5 E 1140 1086        
5 E 1139 1086        
6 E 836 797        
6 E 836 797        

Unscaled Zero Point Vibrational Energy (zpe) 6808.4 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 6489.0 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 QCISD(T)/cc-pVDZ
ABC
3.50524 0.55161 0.55161

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.389
O2 0.000 0.000 -1.125
H3 0.000 1.261 1.057
H4 -1.092 -0.631 1.057
H5 1.092 -0.631 1.057

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.51401.42711.42711.4271
O21.51402.52012.52012.5201
H31.42712.52012.18452.1845
H41.42712.52012.18452.1845
H51.42712.52012.18452.1845

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 117.901 O2 P1 H4 117.901
O2 P1 H5 117.901 H3 P1 H4 99.877
H3 P1 H5 99.877 H4 P1 H5 99.877
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability