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

using model chemistry: QCISD(T)/aug-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)/aug-cc-pVTZ
 hartrees
Energy at 0K-417.842771
Energy at 298.15K-417.847229
HF Energy-417.391180
Nuclear repulsion energy65.255505
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)/aug-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 2445 2364        
2 A1 1241 1199        
3 A1 1145 1107        
4 E 2435 2354        
4 E 2435 2354        
5 E 1135 1098        
5 E 1135 1097        
6 E 839 811        
6 E 838 810        

Unscaled Zero Point Vibrational Energy (zpe) 6823.4 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 6596.8 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 QCISD(T)/aug-cc-pVTZ
ABC
3.51117 0.56876 0.56876

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.386
O2 0.000 0.000 -1.107
H3 0.000 1.260 1.023
H4 -1.091 -0.630 1.023
H5 1.091 -0.630 1.023

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.49291.41221.41221.4122
O21.49292.47512.47512.4751
H31.41222.47512.18262.1826
H41.41222.47512.18262.1826
H51.41222.47512.18262.1826

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 116.831 O2 P1 H4 116.831
O2 P1 H5 116.831 H3 P1 H4 101.210
H3 P1 H5 101.210 H4 P1 H5 101.210
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability