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 CHCl2CHF2 (1,1-dichloro-2,2-difluoroethane)

using model chemistry: CCSD(T)/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)/6-311G*
 hartrees
Energy at 0K-1195.870401
Energy at 298.15K-1195.873960
HF Energy-1194.847778
Nuclear repulsion energy378.098206
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 CCSD(T)/6-311G*
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' 3143 3026        
2 A' 3127 3010        
3 A' 1456 1402        
4 A' 1282 1234        
5 A' 1161 1117        
6 A' 1094 1053        
7 A' 812 782        
8 A' 581 559        
9 A' 407 392        
10 A' 351 338        
11 A' 259 249        
12 A" 1404 1352        
13 A" 1297 1249        
14 A" 1162 1118        
15 A" 846 814        
16 A" 403 388        
17 A" 187 180        
18 A" 81 78        

Unscaled Zero Point Vibrational Energy (zpe) 9526.3 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 9170.0 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 CCSD(T)/6-311G*
ABC
0.08251 0.07037 0.03933

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.407 -0.230 0.000
C2 -0.357 1.096 0.000
H3 1.487 -0.058 0.000
H4 -1.437 0.925 0.000
Cl5 -0.007 -1.139 1.471
Cl6 -0.007 -1.139 -1.471
F7 -0.007 1.814 1.093
F8 -0.007 1.814 -1.093

Atom - Atom Distances (Å)
  C1 C2 H3 H4 Cl5 Cl6 F7 F8
C11.52991.09362.17521.77811.77812.35462.3546
C21.52992.17521.09362.69842.69841.35421.3542
H31.09362.17523.08462.35862.35862.63322.6332
H42.17521.09363.08462.90982.90982.00782.0078
Cl51.77812.69842.35862.90982.94162.97733.9112
Cl61.77812.69842.35862.90982.94163.91122.9773
F72.35461.35422.63322.00782.97733.91122.1869
F82.35461.35422.63322.00783.91122.97732.1869

picture of 1,1-dichloro-2,2-difluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 110.927 C1 C2 F7 109.311
C1 C2 F8 109.311 C2 C1 H3 110.927
C2 C1 Cl5 109.090 C2 C1 Cl6 109.090
H3 C1 Cl5 108.059 H3 C1 Cl6 108.059
H4 C2 F7 109.763 H4 C2 F8 109.763
Cl5 C1 Cl6 111.621 F7 C2 F8 107.703
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability