return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CF2I2 (difluorodiiodomethane)

using model chemistry: M06-2X/3-21G

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/3-21G
 hartrees
Energy at 0K-14018.244256
Energy at 298.15K 
HF Energy-14018.244256
Nuclear repulsion energy959.409818
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/3-21G
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 1108 1062 278.67 22.64 0.48 0.65
2 A1 566 543 14.36 3.52 0.00 0.01
3 A1 268 257 0.28 21.84 0.21 0.34
4 A1 114 110 0.00 7.35 0.53 0.69
5 A2 250 239 0.00 2.04 0.75 0.86
6 B1 740 710 416.79 18.03 0.75 0.86
7 B1 277 265 0.10 7.29 0.75 0.86
8 B2 1228 1178 131.00 0.18 0.75 0.86
9 B2 305 292 1.22 3.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 2427.7 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 2327.5 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/3-21G
ABC
0.08935 0.01843 0.01670

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.867
F2 0.000 1.111 1.664
F3 0.000 -1.111 1.664
I4 1.849 0.000 -0.332
I5 -1.849 0.000 -0.332

Atom - Atom Distances (Å)
  C1 F2 F3 I4 I5
C11.36741.36742.20322.2032
F21.36742.22112.93872.9387
F31.36742.22112.93872.9387
I42.20322.93872.93873.6979
I52.20322.93872.93873.6979

picture of difluorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 F3 108.616 F2 C1 I4 108.499
F2 C1 I5 108.499 F3 C1 I4 108.499
F3 C1 I5 108.499 I4 C1 I5 114.109
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.080      
2 F -0.268      
3 F -0.268      
4 I 0.228      
5 I 0.228      


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 -1.012 1.012
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -68.537 0.000 0.000
y 0.000 -74.396 0.000
z 0.000 0.000 -73.243
Traceless
 xyz
x 5.283 0.000 0.000
y 0.000 -3.506 0.000
z 0.000 0.000 -1.777
Polar
3z2-r2-3.553
x2-y25.859
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.750 0.000 0.000
y 0.000 3.648 0.000
z 0.000 0.000 5.500


<r2> (average value of r2) Å2
<r2> 495.594
(<r2>)1/2 22.262