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All results from a given calculation for CH2I2 (Diiodomethane)

using model chemistry: B2PLYP=FULL/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP=FULL/6-311G**
 hartrees
Energy at 0K-13877.252391
Energy at 298.15K 
HF Energy-13876.782488
Nuclear repulsion energy608.828940
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 B2PLYP=FULL/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 3159 3159 0.29 84.30 0.08 0.15
2 A1 1428 1428 0.12 19.78 0.52 0.68
3 A1 483 483 0.31 18.88 0.11 0.19
4 A1 118 118 0.02 6.15 0.41 0.58
5 A2 1081 1081 0.00 3.30 0.75 0.86
6 B1 3246 3246 2.96 49.50 0.75 0.86
7 B1 731 731 9.67 1.32 0.75 0.86
8 B2 1171 1171 119.48 0.59 0.75 0.86
9 B2 573 573 52.43 9.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5995.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5995.1 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 B2PLYP=FULL/6-311G**
ABC
0.75443 0.01970 0.01927

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.051
I2 0.000 1.834 -0.091
I3 0.000 -1.834 -0.091
H4 -0.895 0.000 1.660
H5 0.895 0.000 1.660

Atom - Atom Distances (Å)
  C1 I2 I3 H4 H5
C12.16092.16091.08271.0827
I22.16093.66852.68922.6892
I32.16093.66852.68922.6892
H41.08272.68922.68921.7909
H51.08272.68922.68921.7909

picture of Diiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 C1 I3 116.172 I2 C1 H4 107.285
I2 C1 H5 107.285 I3 C1 H4 107.285
I3 C1 H5 107.285 H4 C1 H5 111.604
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability