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 CHF2Cl (difluorochloromethane)

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 CS 1A'
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-693.906355
Energy at 298.15K-693.908509
HF Energy-693.424496
Nuclear repulsion energy164.316841
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' 3170 3047 28.29      
2 A' 1385 1331 80.54      
3 A' 1104 1061 156.69      
4 A' 770 740 161.39      
5 A' 558 536 15.43      
6 A' 384 369 0.14      
7 A" 1437 1381 33.09      
8 A" 1196 1150 122.48      
9 A" 350 336 2.86      

Unscaled Zero Point Vibrational Energy (zpe) 5177.0 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 4975.7 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 QCISD/3-21G*
ABC
0.31890 0.15677 0.11184

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.578 -0.082 0.000
H2 -1.443 0.576 0.000
Cl3 0.901 0.931 0.000
F4 -0.578 -0.884 1.124
F5 -0.578 -0.884 -1.124

Atom - Atom Distances (Å)
  C1 H2 Cl3 F4 F5
C11.08711.79291.38051.3805
H21.08712.37082.03532.0353
Cl31.79292.37082.59692.5969
F41.38052.03532.59692.2486
F51.38052.03532.59692.2486

picture of difluorochloromethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 F3 108.307 H2 C1 F4 110.579
H2 C1 Cl5 110.579 F3 C1 F4 109.144
F3 C1 Cl5 109.144 F4 C1 Cl5 109.059
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability