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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-1195.859170
Energy at 298.15K-1195.862713
HF Energy-1194.746066
Nuclear repulsion energy379.370337
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 MP2/6-31G(2df,p)
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 3168 2992 0.50      
2 A 1423 1344 10.41      
3 A 1318 1245 11.72      
4 A 1174 1108 160.01      
5 A 1108 1047 79.97      
6 A 863 815 74.16      
7 A 469 443 1.03      
8 A 315 297 1.12      
9 A 166 157 0.51      
10 A 84 80 0.61      
11 B 3180 3004 8.44      
12 B 1371 1295 6.83      
13 B 1245 1176 26.45      
14 B 1137 1074 19.19      
15 B 853 806 95.76      
16 B 439 414 9.69      
17 B 394 373 6.54      
18 B 336 317 11.23      

Unscaled Zero Point Vibrational Energy (zpe) 9521.2 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 8992.8 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 MP2/6-31G(2df,p)
ABC
0.09879 0.06130 0.03937

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.223 0.729 0.397
C2 0.223 -0.729 0.397
H3 -1.309 0.808 0.342
H4 1.309 -0.808 0.342
F5 0.223 1.282 1.547
F6 -0.223 -1.282 1.547
Cl7 0.476 1.587 -0.979
Cl8 -0.476 -1.587 -0.979

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52411.09062.17021.35172.31681.76522.7050
C21.52412.17021.09062.31681.35172.70501.7652
H31.09062.17023.07632.00562.64572.35322.8585
H42.17021.09063.07632.64572.00562.85852.3532
F51.35172.31682.00562.64572.60332.55623.8855
F62.31681.35172.64572.00562.60333.88552.5562
Cl71.76522.70502.35322.85852.55623.88553.3130
Cl82.70501.76522.85852.35323.88552.55623.3130

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 111.116 C1 C2 F6 107.185
C1 C2 Cl8 110.431 C2 C1 H3 111.116
C2 C1 F5 107.185 C2 C1 Cl7 110.431
H3 C1 F5 109.949 H3 C1 Cl7 108.668
H4 C2 F6 109.949 H4 C2 Cl8 108.668
F5 C1 Cl7 109.476 F6 C2 Cl8 109.476
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability