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

using model chemistry: QCISD(T)/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 QCISD(T)/cc-pV(T+d)Z
 hartrees
Energy at 0K-417.839140
Energy at 298.15K-417.843617
HF Energy-417.398173
Nuclear repulsion energy65.765618
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-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 2454 2454        
2 A1 1286 1286        
3 A1 1169 1169        
4 E 2437 2437        
4 E 2437 2437        
5 E 1147 1147        
5 E 1146 1146        
6 E 857 857        
6 E 857 857        

Unscaled Zero Point Vibrational Energy (zpe) 6894.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6894.4 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-pV(T+d)Z
ABC
3.54993 0.57854 0.57854

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.380
O2 0.000 0.000 -1.097
H3 0.000 1.253 1.024
H4 -1.085 -0.627 1.024
H5 1.085 -0.627 1.024

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.47761.40871.40871.4087
O21.47762.46352.46352.4635
H31.40872.46352.17072.1707
H41.40872.46352.17072.1707
H51.40872.46352.17072.1707

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 117.173 O2 P1 H4 117.173
O2 P1 H5 117.173 H3 P1 H4 100.787
H3 P1 H5 100.787 H4 P1 H5 100.787
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability