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

using model chemistry: CCSD(T)/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 CCSD(T)/6-31G*
 hartrees
Energy at 0K-1195.641940
Energy at 298.15K-1195.645458
HF Energy-1194.716186
Nuclear repulsion energy376.292159
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(T)/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 3147 3027        
2 A 1433 1379        
3 A 1344 1293        
4 A 1162 1118        
5 A 1109 1067        
6 A 862 830        
7 A 465 447        
8 A 317 305        
9 A 166 160        
10 A 85 82        
11 B 3157 3038        
12 B 1376 1324        
13 B 1273 1225        
14 B 1118 1076        
15 B 850 818        
16 B 436 420        
17 B 392 377        
18 B 343 330        

Unscaled Zero Point Vibrational Energy (zpe) 9517.0 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 9156.3 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(T)/6-31G*
ABC
0.09772 0.06006 0.03861

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.232 0.726 0.392
C2 0.232 -0.726 0.392
H3 -1.324 0.793 0.367
H4 1.324 -0.793 0.367
F5 0.232 1.282 1.559
F6 -0.232 -1.282 1.559
Cl7 0.434 1.623 -0.985
Cl8 -0.434 -1.623 -0.985

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52521.09412.17531.37372.32301.77322.7307
C21.52522.17531.09412.32301.37372.73071.7732
H31.09412.17533.08702.02062.63082.36792.9083
H42.17531.09413.08702.63082.02062.90832.3679
F51.37372.32302.02062.63082.60592.57493.9188
F62.32301.37372.63082.02062.60593.91882.5749
Cl71.77322.73072.36792.90832.57493.91883.3602
Cl82.73071.77322.90832.36793.91882.57493.3602

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 111.232 C1 C2 F6 106.401
C1 C2 Cl8 111.544 C2 C1 H3 111.232
C2 C1 F5 106.401 C2 C1 Cl7 111.544
H3 C1 F5 109.408 H3 C1 Cl7 109.035
H4 C2 F6 109.408 H4 C2 Cl8 109.035
F5 C1 Cl7 109.159 F6 C2 Cl8 109.159
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability