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 CHFClCHClF (ethane, 1,2-dichloro-1,2-difluoro-)

using model chemistry: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CI 1AG
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-305.596510
Energy at 298.15K-305.599678
HF Energy-305.116201
Nuclear repulsion energy201.382442
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/LANL2DZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3208 3089 0.00      
2 Ag 1399 1348 0.00      
3 Ag 1308 1259 0.00      
4 Ag 1123 1081 0.00      
5 Ag 959 923 0.00      
6 Ag 787 758 0.00      
7 Ag 473 455 0.00      
8 Ag 342 329 0.00      
9 Ag 254 245 0.00      
10 Au 3216 3098 10.99      
11 Au 1299 1251 13.56      
12 Au 1260 1213 23.46      
13 Au 982 946 201.67      
14 Au 724 697 140.96      
15 Au 362 349 5.73      
16 Au 352 339 43.96      
17 Au 163 157 2.17      
18 Au 65 63 1.53      

Unscaled Zero Point Vibrational Energy (zpe) 9136.4 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 8799.3 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/LANL2DZ
ABC
0.12370 0.04530 0.03424

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.771
C2 0.000 0.000 0.771
H3 1.004 0.000 -1.208
H4 -1.004 0.000 1.208
F5 -0.692 -1.197 -1.211
F6 0.692 1.197 1.211
Cl7 -0.928 1.469 -1.423
Cl8 0.928 -1.469 1.423

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.54191.09502.21921.45122.41671.85592.7988
C21.54192.21921.09502.41671.45122.79881.8559
H31.09502.21923.14172.07602.71722.43633.0147
H42.21921.09503.14172.71722.07603.01472.4363
F51.45122.41672.07602.71723.67642.68513.1043
F62.41671.45122.71722.07603.67643.10432.6851
Cl71.85592.79882.43633.01472.68513.10434.4919
Cl82.79881.85593.01472.43633.10432.68514.4919

picture of ethane, 1,2-dichloro-1,2-difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 113.533 C1 C2 F6 107.656
C1 C2 Cl8 110.574 C2 C1 H3 113.533
C2 C1 F5 107.656 C2 C1 Cl7 110.574
H3 C1 F5 108.432 H3 C1 Cl7 108.537
H4 C2 F6 108.432 H4 C2 Cl8 108.537
F5 C1 Cl7 107.945 F6 C2 Cl8 107.945
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability