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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: QCISD/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 QCISD/cc-pVTZ-PP
 hartrees
Energy at 0K-1547.190931
Energy at 298.15K 
HF Energy-1546.190732
Nuclear repulsion energy560.399915
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 QCISD/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 749 749 82.16      
2 A1 360 360 0.02      
3 A1 213 213 0.06      
4 A1 114 114 0.07      
5 A2 159 159 0.00      
6 B1 675 675 67.20      
7 B1 198 198 0.21      
8 B2 783 783 75.52      
9 B2 234 234 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 1742.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1742.6 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 QCISD/cc-pVTZ-PP
ABC
0.03888 0.01791 0.01557

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/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 1.445 1.686
Cl3 0.000 -1.445 1.686
I4 1.770 0.000 -0.578
I5 -1.770 0.000 -0.578

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.77481.77482.15772.1577
Cl21.77482.89053.21693.2169
Cl31.77482.89053.21693.2169
I42.15773.21693.21693.5396
I52.15773.21693.21693.5396

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 109.040 Cl2 C1 I4 109.391
Cl2 C1 I5 109.391 Cl3 C1 I4 109.391
Cl3 C1 I5 109.391 I4 C1 I5 110.219
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability