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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: CCD/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/cc-pVTZ-PP
 hartrees
Energy at 0K-1547.183284
Energy at 298.15K 
HF Energy-1546.190754
Nuclear repulsion energy560.999412
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 CCD/cc-pVTZ-PP
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 759 759 76.83      
2 A1 363 363 0.02      
3 A1 214 214 0.07      
4 A1 115 115 0.06      
5 A2 160 160 0.00      
6 B1 683 683 60.91      
7 B1 199 199 0.23      
8 B2 794 794 71.31      
9 B2 235 235 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 1760.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1760.7 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 CCD/cc-pVTZ-PP
ABC
0.03897 0.01795 0.01560

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVTZ-PP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.656
Cl2 0.000 1.443 1.684
Cl3 0.000 -1.443 1.684
I4 1.768 0.000 -0.577
I5 -1.768 0.000 -0.577

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.77241.77242.15582.1558
Cl21.77242.88673.21343.2134
Cl31.77242.88673.21343.2134
I42.15583.21343.21343.5366
I52.15583.21343.21343.5366

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 109.051 Cl2 C1 I4 109.389
Cl2 C1 I5 109.389 Cl3 C1 I4 109.389
Cl3 C1 I5 109.389 I4 C1 I5 110.216
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability