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

using model chemistry: CCSD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCSD/6-31G(2df,p)
 hartrees
Energy at 0K-1195.908305
Energy at 298.15K-1195.911863
HF Energy-1194.746351
Nuclear repulsion energy378.693044
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 CCSD/6-31G(2df,p)
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 3168 2995 0.61      
2 A 1443 1364 12.11      
3 A 1331 1259 13.09      
4 A 1187 1123 179.75      
5 A 1116 1056 61.63      
6 A 864 817 69.00      
7 A 470 444 0.85      
8 A 317 300 1.21      
9 A 166 157 0.50      
10 A 83 78 0.65      
11 B 3180 3006 9.27      
12 B 1387 1311 6.80      
13 B 1257 1188 28.45      
14 B 1157 1094 20.23      
15 B 857 810 97.02      
16 B 441 417 10.40      
17 B 397 375 6.82      
18 B 338 319 11.30      

Unscaled Zero Point Vibrational Energy (zpe) 9578.0 cm-1
Scaled (by 0.9455) Zero Point Vibrational Energy (zpe) 9056.0 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 CCSD/6-31G(2df,p)
ABC
0.09904 0.06065 0.03914

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.222 0.730 0.396
C2 0.222 -0.730 0.396
H3 -1.308 0.810 0.343
H4 1.308 -0.810 0.343
F5 0.222 1.281 1.545
F6 -0.222 -1.281 1.545
Cl7 0.477 1.600 -0.978
Cl8 -0.477 -1.600 -0.978

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52621.08962.17141.34892.31561.77022.7170
C21.52622.17141.08962.31561.34892.71701.7702
H31.08962.17143.07642.00152.64472.35632.8710
H42.17141.08963.07642.64472.00152.87102.3563
F51.34892.31562.00152.64472.59992.55513.8923
F62.31561.34892.64472.00152.59993.89232.5551
Cl71.77022.71702.35632.87102.55513.89233.3394
Cl82.71701.77022.87102.35633.89232.55513.3394

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 111.124 C1 C2 F6 107.139
C1 C2 Cl8 110.806 C2 C1 H3 111.124
C2 C1 F5 107.139 C2 C1 Cl7 110.806
H3 C1 F5 109.874 H3 C1 Cl7 108.612
H4 C2 F6 109.874 H4 C2 Cl8 108.612
F5 C1 Cl7 109.265 F6 C2 Cl8 109.265
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability