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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: CCSD(T)/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 CCSD(T)/cc-pVTZ-PP
 hartrees
Energy at 0K-1547.236488
Energy at 298.15K 
HF Energy-1546.190631
Nuclear repulsion energy558.888193
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 CCSD(T)/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 727 727        
2 A1 354 354        
3 A1 208 208        
4 A1 112 112        
5 A2 156 156        
6 B1 652 652        
7 B1 194 194        
8 B2 761 761        
9 B2 229 229        

Unscaled Zero Point Vibrational Energy (zpe) 1696.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1696.0 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 CCSD(T)/cc-pVTZ-PP
ABC
0.03864 0.01783 0.01549

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.661
Cl2 0.000 1.449 1.691
Cl3 0.000 -1.449 1.691
I4 1.774 0.000 -0.580
I5 -1.774 0.000 -0.580

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.77851.77852.16472.1647
Cl21.77852.89853.22593.2259
Cl31.77852.89853.22593.2259
I42.16473.22593.22593.5479
I52.16473.22593.22593.5479

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 109.152 Cl2 C1 I4 109.401
Cl2 C1 I5 109.401 Cl3 C1 I4 109.401
Cl3 C1 I5 109.401 I4 C1 I5 110.067
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability