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/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-1195.792294
Energy at 298.15K-1195.795757
HF Energy-1194.806793
Nuclear repulsion energy373.809445
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/aug-cc-pVDZ
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 3165 3036 0.00      
2 Ag 1393 1336 0.00      
3 Ag 1304 1251 0.00      
4 Ag 1144 1097 0.00      
5 Ag 1059 1015 0.00      
6 Ag 839 804 0.00      
7 Ag 512 491 0.00      
8 Ag 375 360 0.00      
9 Ag 271 260 0.00      
10 Au 3176 3046 6.60      
11 Au 1304 1251 14.01      
12 Au 1230 1180 31.82      
13 Au 1088 1044 235.13      
14 Au 794 762 202.81      
15 Au 401 385 3.38      
16 Au 367 352 26.39      
17 Au 171 164 0.78      
18 Au 74 71 0.70      

Unscaled Zero Point Vibrational Energy (zpe) 9333.8 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 8951.1 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/aug-cc-pVDZ
ABC
0.13194 0.04892 0.03689

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.764
C2 0.000 0.000 0.764
H3 1.019 0.000 -1.174
H4 -1.019 0.000 1.174
F5 -0.674 -1.120 -1.204
F6 0.674 1.120 1.204
Cl7 -0.847 1.450 -1.356
Cl8 0.847 -1.450 1.356

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52781.09822.18931.37952.36251.78072.7042
C21.52782.18931.09822.36251.37952.70421.7807
H31.09822.18933.10872.03032.65092.37012.9208
H42.18931.09823.10872.65092.03032.92082.3701
F51.37952.36252.03032.65093.55452.58082.9955
F62.36251.37952.65092.03033.55452.99552.5808
Cl71.78072.70422.37012.92082.58082.99554.3166
Cl82.70421.78072.92082.37012.99552.58084.3166

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 111.922 C1 C2 F6 108.595
C1 C2 Cl8 109.408 C2 C1 H3 111.922
C2 C1 F5 108.595 C2 C1 Cl7 109.408
H3 C1 F5 109.533 H3 C1 Cl7 108.493
H4 C2 F6 109.533 H4 C2 Cl8 108.493
F5 C1 Cl7 108.842 F6 C2 Cl8 108.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability