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All results from a given calculation for CH2I2 (Diiodomethane)

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-13872.654163
Energy at 298.15K 
HF Energy-13872.654163
Nuclear repulsion energy612.572564
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 HF/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 3315 2998 2.76 80.58 0.11 0.20
2 A1 1561 1411 0.45 24.23 0.48 0.65
3 A1 516 466 1.08 39.04 0.14 0.24
4 A1 129 116 0.04 5.81 0.41 0.58
5 A2 1189 1075 0.00 3.71 0.75 0.86
6 B1 3402 3077 1.88 53.44 0.75 0.86
7 B1 792 716 9.67 1.51 0.75 0.86
8 B2 1284 1162 166.54 5.56 0.75 0.86
9 B2 634 574 49.79 23.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6410.8 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 5797.9 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 HF/6-311G*
ABC
0.76025 0.01996 0.01952

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.048
I2 0.000 1.823 -0.091
I3 0.000 -1.823 -0.091
H4 -0.883 0.000 1.656
H5 0.883 0.000 1.656

Atom - Atom Distances (Å)
  C1 I2 I3 H4 H5
C12.14892.14891.07251.0725
I22.14893.64522.67462.6746
I32.14893.64522.67462.6746
H41.07252.67462.67461.7664
H51.07252.67462.67461.7664

picture of Diiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 C1 I3 116.020 I2 C1 H4 107.491
I2 C1 H5 107.491 I3 C1 H4 107.491
I3 C1 H5 107.491 H4 C1 H5 110.869
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.778      
2 I 0.074      
3 I 0.074      
4 H 0.315      
5 H 0.315      


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 1.485 1.485
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -65.062 0.000 0.000
y 0.000 -64.974 0.000
z 0.000 0.000 -61.757
Traceless
 xyz
x -1.696 0.000 0.000
y 0.000 -1.564 0.000
z 0.000 0.000 3.260
Polar
3z2-r26.521
x2-y2-0.088
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.061 0.000 0.000
y 0.000 13.778 0.000
z 0.000 0.000 7.225


<r2> (average value of r2) Å2
<r2> 406.544
(<r2>)1/2 20.163