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All results from a given calculation for PI3 (Phosphorus triiodide)

using model chemistry: MP2/CEP-31G

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/CEP-31G
 hartrees
Energy at 0K-40.088874
Energy at 298.15K 
HF Energy-39.967130
Nuclear repulsion energy39.836099
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/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 254 245 9.02 15.23 0.45 0.62
2 A1 97 94 0.04 14.99 0.39 0.57
3 E 292 282 49.46 10.49 0.75 0.86
3 E 292 282 49.46 10.49 0.75 0.86
4 E 67 65 0.00 10.32 0.75 0.86
4 E 67 65 0.00 10.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 534.1 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 516.1 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/CEP-31G
ABC
0.01499 0.01499 0.00774

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 1.020
I2 0.000 2.391 -0.096
I3 2.071 -1.196 -0.096
I4 -2.071 -1.196 -0.096

Atom - Atom Distances (Å)
  P1 I2 I3 I4
P12.63892.63892.6389
I22.63894.14214.1421
I32.63894.14214.1421
I42.63894.14214.1421

picture of Phosphorus triiodide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 P1 I3 103.408 I2 P1 I4 103.408
I3 P1 I4 103.408
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability