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

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 C2 1A
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-1195.578345
Energy at 298.15K-1195.581907
HF Energy-1194.716557
Nuclear repulsion energy377.514156
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 A 3194 3012 0.83      
2 A 1444 1362 5.16      
3 A 1360 1283 27.82      
4 A 1171 1104 81.91      
5 A 1117 1053 150.19      
6 A 879 829 81.76      
7 A 472 445 0.81      
8 A 320 302 1.26      
9 A 168 159 0.70      
10 A 87 82 0.67      
11 B 3204 3022 12.24      
12 B 1389 1310 10.38      
13 B 1289 1215 26.05      
14 B 1122 1058 19.71      
15 B 866 817 108.59      
16 B 441 416 11.67      
17 B 396 374 9.06      
18 B 346 326 13.01      

Unscaled Zero Point Vibrational Energy (zpe) 9632.5 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 9083.5 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
0.09824 0.06054 0.03889

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.231 0.725 0.388
C2 0.231 -0.725 0.388
H3 -1.320 0.791 0.364
H4 1.320 -0.791 0.364
F5 0.231 1.279 1.556
F6 -0.231 -1.279 1.556
Cl7 0.432 1.615 -0.982
Cl8 -0.432 -1.615 -0.982

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52141.09102.16901.37312.31941.76392.7192
C21.52142.16901.09102.31941.37312.71921.7639
H31.09102.16903.07782.01662.62552.35822.8966
H42.16901.09103.07782.62552.01662.89662.3582
F51.37312.31942.01662.62552.60002.56823.9066
F62.31941.37312.62552.01662.60003.90662.5682
Cl71.76392.71922.35822.89662.56823.90663.3444
Cl82.71921.76392.89662.35823.90662.56823.3444

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 111.182 C1 C2 F6 106.399
C1 C2 Cl8 111.512 C2 C1 H3 111.182
C2 C1 F5 106.399 C2 C1 Cl7 111.512
H3 C1 F5 109.317 H3 C1 Cl7 109.096
H4 C2 F6 109.317 H4 C2 Cl8 109.096
F5 C1 Cl7 109.273 F6 C2 Cl8 109.273
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability