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All results from a given calculation for CH2I2 (Diiodomethane)

using model chemistry: M06-2X/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 M06-2X/Def2TZVPP
 hartrees
Energy at 0K-634.557402
Energy at 298.15K 
HF Energy-634.557402
Nuclear repulsion energy193.288313
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 M06-2X/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 3168 3168 0.00 100.09 0.05 0.09
2 A1 1427 1427 0.34 17.54 0.51 0.67
3 A1 511 511 0.17 23.77 0.10 0.17
4 A1 122 122 0.01 4.65 0.39 0.56
5 A2 1080 1080 0.00 1.24 0.75 0.86
6 B1 3256 3256 6.21 44.87 0.75 0.86
7 B1 738 738 7.88 0.97 0.75 0.86
8 B2 1155 1155 105.61 2.01 0.75 0.86
9 B2 618 618 40.58 10.44 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6037.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6037.0 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 M06-2X/Def2TZVPP
ABC
0.75474 0.02071 0.02023

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.052
I2 0.000 1.789 -0.091
I3 0.000 -1.789 -0.091
H4 -0.894 0.000 1.658
H5 0.894 0.000 1.658

Atom - Atom Distances (Å)
  C1 I2 I3 H4 H5
C12.12302.12301.08051.0805
I22.12303.57852.65722.6572
I32.12303.57852.65722.6572
H41.08052.65722.65721.7884
H51.08052.65722.65721.7884

picture of Diiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 C1 I3 114.877 I2 C1 H4 107.585
I2 C1 H5 107.585 I3 C1 H4 107.585
I3 C1 H5 107.585 H4 C1 H5 111.702
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.382      
2 I -0.041      
3 I -0.041      
4 H 0.232      
5 H 0.232      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.163 1.163
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -60.770 0.000 0.000
y 0.000 -60.149 0.000
z 0.000 0.000 -57.748
Traceless
 xyz
x -1.821 0.000 0.000
y 0.000 -0.890 0.000
z 0.000 0.000 2.711
Polar
3z2-r25.422
x2-y2-0.620
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.773 0.000 0.000
y 0.000 15.378 0.000
z 0.000 0.000 8.839


<r2> (average value of r2) Å2
<r2> 211.421
(<r2>)1/2 14.540