return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CCl3I (trichloroiodomethane)

using model chemistry: CCSD/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCSD/Def2TZVPP
 hartrees
Energy at 0K-1714.274981
Energy at 298.15K 
HF Energy-1713.028731
Nuclear repulsion energy497.726569
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 CCSD/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 745 745 107.51      
2 A1 420 420 0.08      
3 A1 215 215 0.19      
4 E 807 807 99.19      
4 E 807 807 99.24      
5 E 292 292 0.06      
5 E 291 291 0.06      
6 E 177 177 0.05      
6 E 177 177 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 1964.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1964.8 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 CCSD/Def2TZVPP
ABC
0.05793 0.02870 0.02870

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.760
I2 0.000 0.000 1.389
Cl3 0.000 1.666 -1.354
Cl4 1.442 -0.833 -1.354
Cl5 -1.442 -0.833 -1.354

Atom - Atom Distances (Å)
  C1 I2 Cl3 Cl4 Cl5
C12.14981.76831.76831.7683
I22.14983.20993.20993.2099
Cl31.76833.20992.88482.8848
Cl41.76833.20992.88482.8848
Cl51.76833.20992.88482.8848

picture of trichloroiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 C1 Cl3 109.631 I2 C1 Cl4 109.631
I2 C1 Cl5 109.631 Cl3 C1 Cl4 109.311
Cl3 C1 Cl5 109.311 Cl4 C1 Cl5 109.311
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability