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

using model chemistry: MP2=FULL/STO-3G

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=FULL/STO-3G
 hartrees
Energy at 0K-20889.121755
Energy at 298.15K 
HF Energy-20889.060332
Nuclear repulsion energy1648.580573
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=FULL/STO-3G
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 362 322 19.68 16.89 0.01 0.02
2 A1 134 119 2.05 6.92 0.32 0.49
3 E 419 373 41.66 12.99 0.75 0.86
3 E 419 373 41.66 12.99 0.75 0.86
4 E 91 81 0.40 4.17 0.75 0.86
4 E 91 81 0.40 4.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 758.0 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 673.8 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 MP2=FULL/STO-3G
ABC
0.01691 0.01691 0.00877

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 1.020
I2 0.000 2.247 -0.096
I3 1.946 -1.124 -0.096
I4 -1.946 -1.124 -0.096

Atom - Atom Distances (Å)
  P1 I2 I3 I4
P12.50942.50942.5094
I22.50943.89253.8925
I32.50943.89253.8925
I42.50943.89253.8925

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 101.712 I2 P1 I4 101.712
I3 P1 I4 101.712
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability