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: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CI 1AG
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-1195.595363
Energy at 298.15K-1195.598926
HF Energy-1194.721804
Nuclear repulsion energy376.489342
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**
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 3213 3009 0.00      
2 Ag 1448 1356 0.00      
3 Ag 1381 1293 0.00      
4 Ag 1169 1095 0.00      
5 Ag 1122 1050 0.00      
6 Ag 879 823 0.00      
7 Ag 528 495 0.00      
8 Ag 386 361 0.00      
9 Ag 280 262 0.00      
10 Au 3224 3019 15.14      
11 Au 1368 1281 41.21      
12 Au 1291 1209 33.50      
13 Au 1154 1081 224.21      
14 Au 824 772 195.65      
15 Au 410 384 4.05      
16 Au 376 352 30.50      
17 Au 179 167 1.42      
18 Au 82 77 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 9654.9 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 9041.9 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 MP2/6-31G**
ABC
0.13380 0.04962 0.03740

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.760
C2 0.000 0.000 0.760
H3 1.015 0.000 -1.150
H4 -1.015 0.000 1.150
F5 -0.665 -1.118 -1.191
F6 0.665 1.118 1.191
Cl7 -0.831 1.440 -1.353
Cl8 0.831 -1.440 1.353

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52021.08752.16301.37002.34501.76542.6892
C21.52022.16301.08752.34501.37002.68921.7654
H31.08752.16303.06782.01822.61782.35022.8939
H42.16301.08753.06782.61782.01822.89392.3502
F51.37002.34502.01822.61783.52722.56862.9691
F62.34501.37002.61782.01823.52722.96912.5686
Cl71.76542.68922.35022.89392.56862.96914.2878
Cl82.68921.76542.89392.35022.96912.56864.2878

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 110.995 C1 C2 F6 108.347
C1 C2 Cl8 109.638 C2 C1 H3 110.995
C2 C1 F5 108.347 C2 C1 Cl7 109.638
H3 C1 F5 109.885 H3 C1 Cl7 108.590
H4 C2 F6 109.885 H4 C2 Cl8 108.590
F5 C1 Cl7 109.369 F6 C2 Cl8 109.369
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability