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 CH2ClI (chloroiodomethane)

using model chemistry: CISD/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/Def2TZVPP
 hartrees
Energy at 0K-795.935071
Energy at 298.15K 
HF Energy-795.209040
Nuclear repulsion energy161.581376
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 CISD/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3258 3258 2.49      
2 A' 1522 1522 0.02      
3 A' 1291 1291 74.80      
4 A' 805 805 78.70      
5 A' 591 591 9.16      
6 A' 208 208 0.34      
7 A" 3340 3340 1.22      
8 A" 1202 1202 0.02      
9 A" 842 842 4.14      

Unscaled Zero Point Vibrational Energy (zpe) 6529.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6529.0 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 CISD/Def2TZVPP
ABC
0.94721 0.05472 0.05224

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.786 -1.057 0.000
Cl2 -0.440 -2.311 0.000
I3 0.000 0.905 0.000
H4 1.384 -1.158 0.885
H5 1.384 -1.158 -0.885

Atom - Atom Distances (Å)
  C1 Cl2 I3 H4 H5
C11.75462.11311.07301.0730
Cl21.75463.24572.33272.3327
I32.11313.24572.63742.6374
H41.07302.33272.63741.7703
H51.07302.33272.63741.7703

picture of chloroiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 I3 113.788 Cl2 C1 H4 108.769
Cl2 C1 H5 108.769 I3 C1 H4 107.184
I3 C1 H5 107.184 H4 C1 H5 111.166
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability