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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: MP2/CEP-121G

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-121G
 hartrees
Energy at 0K-57.399504
Energy at 298.15K 
HF Energy-57.157341
Nuclear repulsion energy75.497203
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-121G
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 652 636 92.96 5.50 0.52 0.68
2 A1 321 313 0.03 15.16 0.08 0.15
3 A1 197 192 0.14 11.34 0.41 0.58
4 A1 114 111 0.27 7.26 0.70 0.82
5 A2 151 148 0.00 6.78 0.75 0.86
6 B1 614 600 102.62 3.34 0.75 0.86
7 B1 188 184 0.29 9.13 0.75 0.86
8 B2 666 650 79.04 5.25 0.75 0.86
9 B2 227 221 0.37 9.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1565.2 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 1527.7 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 MP2/CEP-121G
ABC
0.03552 0.01658 0.01447

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.642
Cl2 0.000 1.528 1.759
Cl3 0.000 -1.528 1.759
I4 1.834 0.000 -0.601
I5 -1.834 0.000 -0.601

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.89221.89222.21552.2155
Cl21.89223.05513.35623.3562
Cl31.89223.05513.35623.3562
I42.21553.35623.35623.6681
I52.21553.35623.35623.6681

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 107.664 Cl2 C1 I4 109.333
Cl2 C1 I5 109.333 Cl3 C1 I4 109.333
Cl3 C1 I5 109.333 I4 C1 I5 111.756
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability