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All results from a given calculation for CHFClCHFCl (1,2-dichloro-1,2-difluoroethane RR)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at QCISD(T)/6-311G*
 hartrees
Energy at 0K-1195.863342
Energy at 298.15K-1195.866887
HF Energy-1194.838959
Nuclear repulsion energy376.729257
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(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 3127 3010        
2 A 1433 1380        
3 A 1342 1292        
4 A 1153 1110        
5 A 1093 1052        
6 A 856 824        
7 A 466 449        
8 A 318 306        
9 A 171 165        
10 A 84 81        
11 B 3137 3021        
12 B 1377 1326        
13 B 1269 1222        
14 B 1105 1064        
15 B 845 814        
16 B 440 423        
17 B 397 383        
18 B 338 326        

Unscaled Zero Point Vibrational Energy (zpe) 9475.3 cm-1
Scaled (by 0.9628) Zero Point Vibrational Energy (zpe) 9122.9 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 QCISD(T)/6-311G*
ABC
0.09764 0.06033 0.03876

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.225 0.730 0.399
C2 0.225 -0.730 0.399
H3 -1.315 0.807 0.361
H4 1.315 -0.807 0.361
F5 0.225 1.296 1.556
F6 -0.225 -1.296 1.556
Cl7 0.460 1.605 -0.986
Cl8 -0.460 -1.605 -0.986

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52791.09372.17661.36442.33311.77532.7249
C21.52792.17661.09372.33311.36442.72491.7753
H31.09372.17663.08662.00962.65332.36672.8924
H42.17661.09373.08662.65332.00962.89242.3667
F51.36442.33312.00962.65332.63022.57163.9172
F62.33311.36442.65332.00962.63023.91722.5716
Cl71.77532.72492.36672.89242.57163.91723.3389
Cl82.72491.77532.89242.36673.91722.57163.3389

picture of 1,2-dichloro-1,2-difluoroethane RR state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 111.165 C1 C2 F6 107.403
C1 C2 Cl8 110.940 C2 C1 H3 111.165
C2 C1 F5 107.403 C2 C1 Cl7 110.940
H3 C1 F5 109.183 H3 C1 Cl7 108.830
H4 C2 F6 109.183 H4 C2 Cl8 108.830
F5 C1 Cl7 109.282 F6 C2 Cl8 109.282
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability