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: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-8297.714984
Energy at 298.15K 
HF Energy-8297.714984
Nuclear repulsion energy765.369195
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 HF/3-21G*
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 793 715 88.56 40.17 0.64 0.78
2 A1 427 385 0.16 21.36 0.00 0.00
3 A1 226 204 1.07 9.45 0.37 0.54
4 E 801 723 95.34 16.12 0.75 0.86
4 E 801 723 95.34 16.12 0.75 0.86
5 E 307 277 0.00 4.88 0.75 0.86
5 E 307 277 0.00 4.88 0.75 0.86
6 E 187 169 0.05 3.34 0.75 0.86
6 E 187 169 0.05 3.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 2017.1 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 1820.7 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 HF/3-21G*
ABC
0.05715 0.02791 0.02791

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.771
I2 0.000 0.000 1.412
Cl3 0.000 1.677 -1.377
Cl4 1.452 -0.838 -1.377
Cl5 -1.452 -0.838 -1.377

Atom - Atom Distances (Å)
  C1 I2 Cl3 Cl4 Cl5
C12.18371.78281.78281.7828
I22.18373.25453.25453.2545
Cl31.78283.25452.90432.9043
Cl41.78283.25452.90432.9043
Cl51.78283.25452.90432.9043

picture of trichloroiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 C1 Cl3 109.856 I2 C1 Cl4 109.856
I2 C1 Cl5 109.856 Cl3 C1 Cl4 109.084
Cl3 C1 Cl5 109.084 Cl4 C1 Cl5 109.084
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.526      
2 I 0.245      
3 Cl 0.094      
4 Cl 0.094      
5 Cl 0.094      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.126 1.126
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -73.174 0.000 0.000
y 0.000 -73.174 0.000
z 0.000 0.000 -69.768
Traceless
 xyz
x -1.703 0.000 0.000
y 0.000 -1.703 0.000
z 0.000 0.000 3.406
Polar
3z2-r26.812
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.586 0.000 0.000
y 0.000 8.586 0.000
z 0.000 0.000 11.075


<r2> (average value of r2) Å2
<r2> 394.368
(<r2>)1/2 19.859