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

using model chemistry: QCISD(T)/cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-417.829590
Energy at 298.15K-417.834059
HF Energy-417.388028
Nuclear repulsion energy65.423742
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-pVTZ
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 2446 2320        
2 A1 1271 1206        
3 A1 1160 1100        
4 E 2431 2306        
4 E 2430 2306        
5 E 1141 1083        
5 E 1141 1082        
6 E 849 806        
6 E 849 805        

Unscaled Zero Point Vibrational Energy (zpe) 6859.3 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 6506.7 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 QCISD(T)/cc-pVTZ
ABC
3.53077 0.57190 0.57190

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.383
O2 0.000 0.000 -1.104
H3 0.000 1.257 1.028
H4 -1.088 -0.628 1.028
H5 1.088 -0.628 1.028

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48701.41251.41251.4125
O21.48702.47482.47482.4748
H31.41252.47482.17662.1766
H41.41252.47482.17662.1766
H51.41252.47482.17662.1766

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 117.172 O2 P1 H4 117.172
O2 P1 H5 117.172 H3 P1 H4 100.789
H3 P1 H5 100.789 H4 P1 H5 100.789
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability