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All results from a given calculation for CH2I2 (Diiodomethane)

using model chemistry: PM6

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM6
 hartrees
Energy at 0K 
Energy at 298.15K0.047257
HF Energy0.047257
Nuclear repulsion energy49.930484
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 PM6
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 2714 2883 141.15      
2 A1 1196 1271 50.25      
3 A1 470 499 1.97      
4 A1 102 108 0.03      
5 A2 879 934 0.00      
6 B1 2650 2815 215.70      
7 B1 630 670 40.22      
8 B2 1060 1126 1.00      
9 B2 658 699 62.05      

Unscaled Zero Point Vibrational Energy (zpe) 5179.2 cm-1
Scaled (by 1.0624) Zero Point Vibrational Energy (zpe) 5502.4 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 PM6
ABC
0.78044 0.02028 0.01985

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM6

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.024
I2 0.000 1.808 -0.089
I3 0.000 -1.808 -0.089
H4 -0.895 0.000 1.661
H5 0.895 0.000 1.661

Atom - Atom Distances (Å)
  C1 I2 I3 H4 H5
C12.12312.12311.09881.0988
I22.12313.61562.67082.6708
I32.12313.61562.67082.6708
H41.09882.67082.67081.7909
H51.09882.67082.67081.7909

picture of Diiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 C1 I3 116.745 I2 C1 H4 107.692
I2 C1 H5 107.692 I3 C1 H4 107.692
I3 C1 H5 107.692 H4 C1 H5 109.164
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability