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

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-417.699643
Energy at 298.15K-417.704119
HF Energy-417.359701
Nuclear repulsion energy64.960272
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 MP2/TZVP
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 2509 2378 92.48      
2 A1 1274 1207 236.78      
3 A1 1171 1110 2.27      
4 E 2490 2360 124.88      
4 E 2490 2360 124.88      
5 E 1179 1118 40.83      
5 E 1179 1118 40.83      
6 E 848 803 33.21      
6 E 848 803 33.21      

Unscaled Zero Point Vibrational Energy (zpe) 6993.2 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 6628.9 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 MP2/TZVP
ABC
3.54871 0.56146 0.56146

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.388
O2 0.000 0.000 -1.115
H3 0.000 1.253 1.034
H4 -1.086 -0.627 1.034
H5 1.086 -0.627 1.034

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.50331.41041.41041.4104
O21.50332.48852.48852.4885
H31.41042.48852.17112.1711
H41.41042.48852.17112.1711
H51.41042.48852.17112.1711

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 117.284 O2 P1 H4 117.284
O2 P1 H5 117.284 H3 P1 H4 100.649
H3 P1 H5 100.649 H4 P1 H5 100.649
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability