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All results from a given calculation for CH2I2 (Diiodomethane)

using model chemistry: wB97X-D/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 wB97X-D/6-311G*
 hartrees
Energy at 0K-13878.651525
Energy at 298.15K 
HF Energy-13878.651525
Nuclear repulsion energy612.744625
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 wB97X-D/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 3154 3154 0.77 78.91 0.08 0.15
2 A1 1448 1448 0.05 20.17 0.52 0.68
3 A1 500 500 0.25 20.57 0.11 0.19
4 A1 122 122 0.02 5.34 0.42 0.59
5 A2 1109 1109 0.00 3.82 0.75 0.86
6 B1 3238 3238 2.47 49.24 0.75 0.86
7 B1 739 739 11.32 1.36 0.75 0.86
8 B2 1195 1195 107.48 0.53 0.75 0.86
9 B2 609 609 40.85 10.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6055.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6055.7 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 wB97X-D/6-311G*
ABC
0.75960 0.01998 0.01954

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.046
I2 0.000 1.822 -0.091
I3 0.000 -1.822 -0.091
H4 -0.891 0.000 1.662
H5 0.891 0.000 1.662

Atom - Atom Distances (Å)
  C1 I2 I3 H4 H5
C12.14712.14711.08391.0839
I22.14713.64342.68072.6807
I32.14713.64342.68072.6807
H41.08392.68072.68071.7829
H51.08392.68072.68071.7829

picture of Diiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 C1 I3 116.084 I2 C1 H4 107.521
I2 C1 H5 107.521 I3 C1 H4 107.521
I3 C1 H5 107.521 H4 C1 H5 110.668
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.807      
2 I 0.089      
3 I 0.089      
4 H 0.314      
5 H 0.314      


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 1.325 1.325
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -64.341 0.000 0.000
y 0.000 -63.678 0.000
z 0.000 0.000 -61.166
Traceless
 xyz
x -1.920 0.000 0.000
y 0.000 -0.925 0.000
z 0.000 0.000 2.844
Polar
3z2-r25.689
x2-y2-0.663
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.267 0.000 0.000
y 0.000 13.857 0.000
z 0.000 0.000 7.386


<r2> (average value of r2) Å2
<r2> 405.701
(<r2>)1/2 20.142