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 CCl2I2 (dichlorodiiodomethane)

using model chemistry: HSEh1PBE/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 HSEh1PBE/Def2TZVPP
 hartrees
Energy at 0K-1553.648553
Energy at 298.15K 
HF Energy-1553.648553
Nuclear repulsion energy561.751559
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 HSEh1PBE/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 719 719 113.70 18.71 0.33 0.50
2 A1 360 360 0.02 13.21 0.01 0.01
3 A1 207 207 0.04 9.36 0.19 0.32
4 A1 109 109 0.06 3.30 0.59 0.74
5 A2 154 154 0.00 2.39 0.75 0.86
6 B1 627 627 99.91 19.55 0.75 0.86
7 B1 192 192 0.01 4.83 0.75 0.86
8 B2 761 761 101.96 1.40 0.75 0.86
9 B2 229 229 0.36 3.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1679.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1679.3 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 HSEh1PBE/Def2TZVPP
ABC
0.03904 0.01799 0.01561

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.672
Cl2 0.000 1.437 1.684
Cl3 0.000 -1.437 1.684
I4 1.767 0.000 -0.578
I5 -1.767 0.000 -0.578

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.75751.75752.16492.1649
Cl21.75752.87353.21043.2104
Cl31.75752.87353.21043.2104
I42.16493.21043.21043.5348
I52.16493.21043.21043.5348

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 109.669 Cl2 C1 I4 109.428
Cl2 C1 I5 109.428 Cl3 C1 I4 109.428
Cl3 C1 I5 109.428 I4 C1 I5 109.446
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.036      
2 Cl -0.019      
3 Cl -0.019      
4 I 0.037      
5 I 0.037      


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 -0.390 0.390
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -80.440 0.000 0.000
y 0.000 -83.860 0.000
z 0.000 0.000 -82.635
Traceless
 xyz
x 2.807 0.000 0.000
y 0.000 -2.322 0.000
z 0.000 0.000 -0.485
Polar
3z2-r2-0.970
x2-y23.420
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 17.247 0.000 0.000
y 0.000 12.447 0.000
z 0.000 0.000 14.212


<r2> (average value of r2) Å2
<r2> 393.656
(<r2>)1/2 19.841