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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: CISD/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 CISD/cc-pVTZ-PP
 hartrees
Energy at 0K-1546.978665
Energy at 298.15K 
HF Energy-1546.190564
Nuclear repulsion energy564.244548
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 CISD/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 795 795 80.51      
2 A1 377 377 0.06      
3 A1 222 222 0.12      
4 A1 119 119 0.06      
5 A2 167 167 0.00      
6 B1 721 721 60.36      
7 B1 207 207 0.36      
8 B2 828 828 76.44      
9 B2 244 244 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 1839.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1839.4 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 CISD/cc-pVTZ-PP
ABC
0.03946 0.01814 0.01577

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.650
Cl2 0.000 1.435 1.674
Cl3 0.000 -1.435 1.674
I4 1.759 0.000 -0.574
I5 -1.759 0.000 -0.574

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.76271.76272.14282.1428
Cl21.76272.86953.19433.1943
Cl31.76272.86953.19433.1943
I42.14283.19433.19433.5186
I52.14283.19433.19433.5186

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 108.970 Cl2 C1 I4 109.368
Cl2 C1 I5 109.368 Cl3 C1 I4 109.368
Cl3 C1 I5 109.368 I4 C1 I5 110.377
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability