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: B2PLYP=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/3-21G*
 hartrees
Energy at 0K-7386.904220
Energy at 298.15K 
HF Energy-7386.781408
Nuclear repulsion energy284.009780
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 B2PLYP=FULL/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 A' 3170 3170 1.20 80.75 0.10 0.18
2 A' 1515 1515 0.09 18.40 0.72 0.84
3 A' 1267 1267 63.07 4.44 0.28 0.44
4 A' 688 688 94.03 6.12 0.70 0.83
5 A' 546 546 14.57 21.81 0.18 0.31
6 A' 194 194 0.21 7.65 0.45 0.62
7 A" 3253 3253 1.06 55.09 0.75 0.86
8 A" 1181 1181 0.01 10.19 0.75 0.86
9 A" 817 817 6.69 2.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6314.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6314.9 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 B2PLYP=FULL/3-21G*
ABC
0.89222 0.05165 0.04929

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.815 -1.102 0.000
Cl2 -0.454 -2.375 0.000
I3 0.000 0.932 0.000
H4 1.412 -1.205 0.899
H5 1.412 -1.205 -0.899

Atom - Atom Distances (Å)
  C1 Cl2 I3 H4 H5
C11.79732.19141.08441.0844
Cl21.79733.33852.37862.3786
I32.19143.33852.71512.7151
H41.08442.37862.71511.7988
H51.08442.37862.71511.7988

picture of chloroiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 I3 113.279 Cl2 C1 H4 108.731
Cl2 C1 H5 108.731 I3 C1 H4 107.044
I3 C1 H5 107.044 H4 C1 H5 112.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability