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

using model chemistry: MP2/CEP-31G

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/CEP-31G
 hartrees
Energy at 0K-89.516889
Energy at 298.15K-89.520072
HF Energy-89.084930
Nuclear repulsion energy130.669885
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-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 A 3199 3091 1.20      
2 A 1394 1347 0.40      
3 A 1283 1239 14.55      
4 A 1111 1074 12.55      
5 A 961 929 177.11      
6 A 792 765 81.77      
7 A 420 406 0.21      
8 A 288 278 1.60      
9 A 156 151 1.38      
10 A 66 64 1.21      
11 B 3208 3100 14.16      
12 B 1305 1261 9.25      
13 B 1246 1204 25.16      
14 B 950 918 15.99      
15 B 777 751 90.96      
16 B 391 378 19.84      
17 B 355 343 15.17      
18 B 321 310 14.01      

Unscaled Zero Point Vibrational Energy (zpe) 9110.3 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 8803.2 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-31G
ABC
0.08918 0.05525 0.03532

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.258 0.737 0.419
C2 0.258 -0.737 0.419
H3 -1.359 0.810 0.441
H4 1.359 -0.810 0.441
F5 0.258 1.362 1.629
F6 -0.258 -1.362 1.629
Cl7 0.388 1.699 -1.037
Cl8 -0.388 -1.699 -1.037

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.56161.10312.23781.45622.42231.86112.8410
C21.56162.23781.10312.42231.45622.84101.8611
H31.10312.23783.16372.08102.70952.45433.0694
H42.23781.10313.16372.70952.08103.06942.4543
F51.45622.42232.08102.70952.77172.69034.1101
F62.42231.45622.70952.08102.77174.11012.6903
Cl71.86112.84102.45433.06942.69034.11013.4860
Cl82.84101.86113.06942.45434.11012.69033.4860

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 113.115 C1 C2 F6 106.721
C1 C2 Cl8 111.913 C2 C1 H3 113.115
C2 C1 F5 106.721 C2 C1 Cl7 111.913
H3 C1 F5 108.005 H3 C1 Cl7 109.092
H4 C2 F6 108.005 H4 C2 Cl8 109.092
F5 C1 Cl7 107.761 F6 C2 Cl8 107.761
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability