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

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 C2 1A
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-1189.376220
Energy at 298.15K-1189.379374
HF Energy-1188.830640
Nuclear repulsion energy364.060455
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 3172 3074 1.12      
2 A 1430 1386 3.34      
3 A 1294 1254 22.15      
4 A 1138 1103 125.51      
5 A 1051 1018 40.90      
6 A 745 722 60.39      
7 A 391 379 5.15      
8 A 276 268 0.97      
9 A 152 147 1.68      
10 A 75 72 0.97      
11 B 3185 3087 3.25      
12 B 1360 1318 1.79      
13 B 1238 1199 35.96      
14 B 1103 1069 3.39      
15 B 725 703 103.14      
16 B 393 381 18.30      
17 B 343 332 14.65      
18 B 309 300 10.24      

Unscaled Zero Point Vibrational Energy (zpe) 9189.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 8906.1 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
0.08910 0.05730 0.03633

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.234 0.726 0.446
C2 0.234 -0.726 0.446
H3 -1.314 0.822 0.350
H4 1.314 -0.822 0.350
F5 0.234 1.327 1.619
F6 -0.234 -1.327 1.619
Cl7 0.537 1.632 -1.035
Cl8 -0.537 -1.632 -1.035

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52481.08872.19101.39862.36401.89982.8006
C21.52482.19101.08872.36401.39862.80061.8998
H31.08872.19103.09992.06452.71922.44962.9230
H42.19101.08873.09992.71922.06452.92302.4496
F51.39862.36402.06452.71922.69492.68844.0488
F62.36401.39862.71922.06452.69494.04882.6884
Cl71.89982.80062.44962.92302.68844.04883.4360
Cl82.80061.89982.92302.44964.04882.68843.4360

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 112.871 C1 C2 F6 107.847
C1 C2 Cl8 109.243 C2 C1 H3 112.871
C2 C1 F5 107.847 C2 C1 Cl7 109.243
H3 C1 F5 111.591 H3 C1 Cl7 106.953
H4 C2 F6 111.591 H4 C2 Cl8 106.953
F5 C1 Cl7 108.229 F6 C2 Cl8 108.229
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability