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

using model chemistry: QCISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-417.673250
Energy at 298.15K-417.677738
HF Energy-417.345096
Nuclear repulsion energy65.449438
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/6-311G*
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 2417 2314 93.35      
2 A1 1303 1248 239.80      
3 A1 1183 1133 1.40      
4 E 2394 2292 140.88      
4 E 2394 2292 140.88      
5 E 1154 1105 46.09      
5 E 1154 1105 46.08      
6 E 882 845 42.28      
6 E 882 845 42.28      

Unscaled Zero Point Vibrational Energy (zpe) 6881.5 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 6588.3 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/6-311G*
ABC
3.52904 0.57275 0.57275

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.381
O2 0.000 0.000 -1.103
H3 0.000 1.257 1.035
H4 -1.089 -0.628 1.035
H5 1.089 -0.628 1.035

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48381.41711.41711.4171
O21.48382.48032.48032.4803
H31.41712.48032.17712.1771
H41.41712.48032.17712.1771
H51.41712.48032.17712.1771

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 117.500 O2 P1 H4 117.500
O2 P1 H5 117.500 H3 P1 H4 100.380
H3 P1 H5 100.380 H4 P1 H5 100.380
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability