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: TPSSh/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 TPSSh/Def2TZVPP
 hartrees
Energy at 0K-833.104591
Energy at 298.15K 
HF Energy-833.104591
Nuclear repulsion energy391.097586
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 TPSSh/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 1062 1062 289.08 21.47 0.34 0.51
2 A1 596 596 5.41 4.37 0.01 0.01
3 A1 266 266 0.16 15.08 0.13 0.23
4 A1 107 107 0.12 3.86 0.41 0.58
5 A2 241 241 0.00 0.58 0.75 0.86
6 B1 714 714 355.08 9.98 0.75 0.86
7 B1 266 266 0.21 4.13 0.75 0.86
8 B2 1109 1109 152.45 1.08 0.75 0.86
9 B2 302 302 0.10 1.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 2330.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2330.9 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 TPSSh/Def2TZVPP
ABC
0.09064 0.01925 0.01733

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.870
F2 0.000 1.080 1.663
F3 0.000 -1.080 1.663
I4 1.810 0.000 -0.332
I5 -1.810 0.000 -0.332

Atom - Atom Distances (Å)
  C1 F2 F3 I4 I5
C11.33951.33952.17262.1726
F21.33952.16022.90152.9015
F31.33952.16022.90152.9015
I42.17262.90152.90153.6196
I52.17262.90152.90153.6196

picture of difluorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 F3 107.481 F2 C1 I4 109.099
F2 C1 I5 109.099 F3 C1 I4 109.099
F3 C1 I5 109.099 I4 C1 I5 112.823
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.275      
2 F -0.112      
3 F -0.112      
4 I -0.026      
5 I -0.026      


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 -0.715 0.715
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 16.226 0.000 0.000
y 0.000 8.387 0.000
z 0.000 0.000 9.837


<r2> (average value of r2) Å2
<r2> 286.966
(<r2>)1/2 16.940