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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-14648.026047
Energy at 298.15K 
HF Energy-14647.912877
Nuclear repulsion energy1244.109332
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/STO-3G
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 823 717 104.24 8.78 0.44 0.61
2 A1 360 314 1.38 9.96 0.02 0.05
3 A1 217 189 0.74 5.75 0.38 0.55
4 A1 123 107 0.01 3.67 0.69 0.82
5 A2 164 143 0.00 3.42 0.75 0.86
6 B1 752 656 110.74 4.09 0.75 0.86
7 B1 206 180 1.90 4.42 0.75 0.86
8 B2 856 746 98.67 9.07 0.75 0.86
9 B2 242 211 1.04 4.53 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1871.6 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 1631.8 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/STO-3G
ABC
0.03670 0.01677 0.01465

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.612
Cl2 0.000 1.498 1.735
Cl3 0.000 -1.498 1.735
I4 1.828 0.000 -0.591
I5 -1.828 0.000 -0.591

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.87251.87252.18842.1884
Cl21.87252.99583.31643.3164
Cl31.87252.99583.31643.3164
I42.18843.31643.31643.6564
I52.18843.31643.31643.6564

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 106.251 Cl2 C1 I4 109.258
Cl2 C1 I5 109.258 Cl3 C1 I4 109.258
Cl3 C1 I5 109.258 I4 C1 I5 113.315
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability