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

using model chemistry: QCISD/TZVP

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/TZVP
 hartrees
Energy at 0K-1195.889753
Energy at 298.15K-1195.893327
HF Energy-1194.876263
Nuclear repulsion energy376.580782
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/TZVP
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 3173 3031 0.16      
2 A 1447 1382 9.61      
3 A 1343 1283 17.42      
4 A 1163 1111 145.81      
5 A 1095 1046 122.07      
6 A 860 821 79.02      
7 A 469 448 0.56      
8 A 317 303 1.41      
9 A 170 163 0.70      
10 A 82 78 0.63      
11 B 3184 3042 11.36      
12 B 1392 1330 6.56      
13 B 1279 1222 32.27      
14 B 1117 1067 26.42      
15 B 853 814 94.73      
16 B 444 424 14.53      
17 B 399 381 8.48      
18 B 341 325 11.00      

Unscaled Zero Point Vibrational Energy (zpe) 9563.4 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 9135.9 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/TZVP
ABC
0.09781 0.06004 0.03871

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.220 0.731 0.398
C2 0.220 -0.731 0.398
H3 -1.303 0.817 0.348
H4 1.303 -0.817 0.348
F5 0.220 1.298 1.555
F6 -0.220 -1.298 1.555
Cl7 0.484 1.603 -0.984
Cl8 -0.484 -1.603 -0.984

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52711.08722.17271.36172.33591.77932.7252
C21.52712.17271.08722.33591.36172.72521.7793
H31.08722.17273.07622.00232.66542.36312.8811
H42.17271.08723.07622.66542.00232.88112.3631
F51.36172.33592.00232.66542.63392.57023.9189
F62.33591.36172.66542.00232.63393.91892.5702
Cl71.77932.72522.36312.88112.57023.91893.3490
Cl82.72521.77932.88112.36313.91892.57023.3490

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 111.308 C1 C2 F6 107.784
C1 C2 Cl8 110.784 C2 C1 H3 111.308
C2 C1 F5 107.784 C2 C1 Cl7 110.784
H3 C1 F5 109.187 H3 C1 Cl7 108.637
H4 C2 F6 109.187 H4 C2 Cl8 108.637
F5 C1 Cl7 109.103 F6 C2 Cl8 109.103
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability