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 CF2ClCFCl2 (Ethane, 1,1,2-trichloro-1,2,2-trifluoro-)

using model chemistry: MP2/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/CEP-121G*
 hartrees
Energy at 0K-127.827957
Energy at 298.15K-127.829760
HF Energy-126.611439
Nuclear repulsion energy230.737465
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/CEP-121G*
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 1250 1191 51.09      
2 A 1188 1132 193.14      
3 A 1122 1069 210.94      
4 A 1082 1031 82.96      
5 A 943 899 206.99      
6 A 839 799 242.52      
7 A 652 621 9.26      
8 A 532 506 4.27      
9 A 465 443 0.97      
10 A 447 426 0.96      
11 A 397 378 1.09      
12 A 352 335 0.30      
13 A 314 299 0.53      
14 A 291 277 0.05      
15 A 244 233 0.09      
16 A 201 191 1.17      
17 A 166 158 0.63      
18 A 74 70 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 5279.0 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 5029.8 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/CEP-121G*
ABC
0.05195 0.03602 0.02944

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.587 0.152 0.301
C2 -0.731 -0.526 -0.220
F3 0.479 0.259 1.659
Cl4 1.975 -0.883 -0.080
Cl5 0.776 1.768 -0.393
Cl6 -2.169 0.395 0.228
F7 -0.667 -0.657 -1.567
F8 -0.815 -1.770 0.314

Atom - Atom Distances (Å)
  C1 C2 F3 Cl4 Cl5 Cl6 F7 F8
C11.57171.36661.77301.76872.76782.39102.3791
C21.57172.36922.73372.75031.76521.35451.3564
F31.36662.36922.56252.56483.01303.54392.7564
Cl41.77302.73372.56252.92654.34783.04082.9542
Cl51.76872.75032.56482.92653.30823.05603.9430
Cl62.76781.76523.01304.34783.30822.56582.5548
F72.39101.35453.54393.04083.05602.56582.1909
F82.37911.35642.75642.95423.94302.55482.1909

picture of Ethane, 1,1,2-trichloro-1,2,2-trifluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl6 111.954 C1 C2 F7 109.368
C1 C2 F8 108.462 C2 C1 F3 107.266
C2 C1 Cl4 109.490 C2 C1 Cl5 110.706
F3 C1 Cl4 108.718 F3 C1 Cl5 109.106
Cl4 C1 Cl5 111.441 Cl6 C2 F7 109.961
Cl6 C2 F8 109.154 F7 C2 F8 107.840
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability