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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-14736.211428
Energy at 298.15K 
HF Energy-14736.211428
Nuclear repulsion energy1268.481760
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 mPW1PW91/3-21G*
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 693 658 113.25 11.68 0.50 0.66
2 A1 355 337 0.15 14.77 0.02 0.04
3 A1 211 200 0.04 9.23 0.22 0.36
4 A1 108 103 0.06 3.56 0.61 0.76
5 A2 155 147 0.00 2.99 0.75 0.86
6 B1 659 626 91.03 14.20 0.75 0.86
7 B1 195 185 0.13 5.33 0.75 0.86
8 B2 694 659 104.56 3.14 0.75 0.86
9 B2 226 215 0.29 4.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1647.5 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 1564.5 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 mPW1PW91/3-21G*
ABC
0.03803 0.01753 0.01523

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.670
Cl2 0.000 1.459 1.706
Cl3 0.000 -1.459 1.706
I4 1.789 0.000 -0.585
I5 -1.789 0.000 -0.585

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.78921.78922.18572.1857
Cl21.78922.91763.25253.2525
Cl31.78922.91763.25253.2525
I42.18573.25253.25253.5786
I52.18573.25253.25253.5786

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 109.244 Cl2 C1 I4 109.420
Cl2 C1 I5 109.420 Cl3 C1 I4 109.420
Cl3 C1 I5 109.420 I4 C1 I5 109.901
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.601      
2 Cl 0.104      
3 Cl 0.104      
4 I 0.196      
5 I 0.196      


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 -0.884 0.884
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -82.329 0.000 0.000
y 0.000 -87.940 0.000
z 0.000 0.000 -86.443
Traceless
 xyz
x 4.863 0.000 0.000
y 0.000 -3.554 0.000
z 0.000 0.000 -1.309
Polar
3z2-r2-2.617
x2-y25.611
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 14.724 0.000 0.000
y 0.000 10.631 0.000
z 0.000 0.000 12.052


<r2> (average value of r2) Å2
<r2> 603.102
(<r2>)1/2 24.558