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 CHFClI (fluorochloroiodomethane)

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-7482.904825
Energy at 298.15K 
HF Energy-7482.415711
Nuclear repulsion energy405.740618
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 QCISD/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 3159 3036 3.54      
2 A 1350 1297 11.76      
3 A 1251 1202 93.89      
4 A 1086 1043 94.30      
5 A 723 695 167.11      
6 A 588 566 34.98      
7 A 386 371 1.07      
8 A 256 246 0.58      
9 A 192 184 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 4495.0 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 4320.1 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 QCISD/3-21G*
ABC
0.19899 0.04680 0.03888

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.019 0.477 0.438
H2 1.095 0.598 1.518
F3 1.312 1.677 -0.215
Cl4 2.188 -0.779 -0.075
I5 -1.061 -0.100 -0.018

Atom - Atom Distances (Å)
  C1 H2 F3 Cl4 I5
C11.08881.39771.79132.2057
H21.08882.05322.37262.7366
F31.39772.05322.61202.9706
Cl41.79132.37262.61203.3196
I52.20572.73662.97063.3196

picture of fluorochloroiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 F3 110.715 H2 C1 Cl4 108.457
H2 C1 I5 107.430 F3 C1 Cl4 109.362
F3 C1 I5 108.984 Cl4 C1 I5 111.887
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability