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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-57.370704
Energy at 298.15K 
HF Energy-57.154197
Nuclear repulsion energy75.460226
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 MP2/CEP-31G
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 660 638 98.16 5.09 0.52 0.68
2 A1 323 312 0.03 15.54 0.09 0.17
3 A1 198 191 0.05 11.96 0.40 0.57
4 A1 115 111 0.25 7.60 0.70 0.82
5 A2 153 148 0.00 7.81 0.75 0.86
6 B1 619 598 106.59 3.27 0.75 0.86
7 B1 190 183 0.16 9.36 0.75 0.86
8 B2 678 655 80.18 4.58 0.75 0.86
9 B2 230 222 0.48 11.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1582.2 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 1528.9 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 MP2/CEP-31G
ABC
0.03549 0.01656 0.01445

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.643
Cl2 0.000 1.528 1.759
Cl3 0.000 -1.528 1.759
I4 1.835 0.000 -0.601
I5 -1.835 0.000 -0.601

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.89301.89302.21662.2166
Cl21.89303.05683.35773.3577
Cl31.89303.05683.35773.3577
I42.21663.35773.35773.6703
I52.21663.35773.35773.6703

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 107.679 Cl2 C1 I4 109.326
Cl2 C1 I5 109.326 Cl3 C1 I4 109.326
Cl3 C1 I5 109.326 I4 C1 I5 111.767
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability