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All results from a given calculation for CH2I2 (Diiodomethane)

using model chemistry: B2PLYP=FULL/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-634.421075
Energy at 298.15K 
HF Energy-633.994647
Nuclear repulsion energy192.167632
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/Def2TZVPP
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 3153 3153 0.07 91.88 0.05 0.10
2 A1 1424 1424 0.28 19.50 0.50 0.67
3 A1 496 496 0.18 18.75 0.09 0.17
4 A1 118 118 0.01 4.83 0.38 0.55
5 A2 1065 1065 0.00 0.89 0.75 0.86
6 B1 3242 3242 4.25 43.60 0.75 0.86
7 B1 729 729 7.50 0.80 0.75 0.86
8 B2 1147 1147 101.87 1.81 0.75 0.86
9 B2 593 593 46.79 8.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5983.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5983.7 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/Def2TZVPP
ABC
0.75783 0.02039 0.01993

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.050
I2 0.000 1.803 -0.091
I3 0.000 -1.803 -0.091
H4 -0.894 0.000 1.654
H5 0.894 0.000 1.654

Atom - Atom Distances (Å)
  C1 I2 I3 H4 H5
C12.13342.13341.07921.0792
I22.13343.60632.66362.6636
I32.13343.60632.66362.6636
H41.07922.66362.66361.7880
H51.07922.66362.66361.7880

picture of Diiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 C1 I3 115.385 I2 C1 H4 107.420
I2 C1 H5 107.420 I3 C1 H4 107.420
I3 C1 H5 107.420 H4 C1 H5 111.867
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability