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 CHFClCHFCl (1,2-dichloro-1,2-difluoroethane RR)

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-1197.032006
Energy at 298.15K-1197.035490
HF Energy-1196.650178
Nuclear repulsion energy377.813398
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 B2PLYP=FULL/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 3143 3143 0.48      
2 A 1415 1415 9.21      
3 A 1307 1307 11.19      
4 A 1158 1158 179.78      
5 A 1089 1089 69.34      
6 A 837 837 83.75      
7 A 459 459 2.14      
8 A 314 314 1.22      
9 A 164 164 0.52      
10 A 79 79 0.61      
11 B 3155 3155 10.88      
12 B 1363 1363 6.27      
13 B 1240 1240 30.77      
14 B 1123 1123 19.89      
15 B 824 824 102.60      
16 B 438 438 10.57      
17 B 389 389 6.27      
18 B 332 332 10.28      

Unscaled Zero Point Vibrational Energy (zpe) 9413.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9413.2 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 B2PLYP=FULL/6-31G(2df,p)
ABC
0.09843 0.06039 0.03897

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.219 0.732 0.397
C2 0.219 -0.732 0.397
H3 -1.302 0.821 0.329
H4 1.302 -0.821 0.329
F5 0.219 1.284 1.549
F6 -0.219 -1.284 1.549
Cl7 0.497 1.598 -0.980
Cl8 -0.497 -1.598 -0.980

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52701.08942.17431.35042.32121.77752.7206
C21.52702.17431.08942.32121.35042.72061.7775
H31.08942.17433.07882.00382.66272.35722.8662
H42.17431.08943.07882.66272.00382.86622.3572
F51.35042.32122.00382.66272.60402.56373.9005
F62.32121.35042.66272.00382.60403.90052.5637
Cl71.77752.72062.35722.86622.56373.90053.3479
Cl82.72061.77752.86622.35723.90052.56373.3479

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 111.313 C1 C2 F6 107.390
C1 C2 Cl8 110.608 C2 C1 H3 111.313
C2 C1 F5 107.390 C2 C1 Cl7 110.608
H3 C1 F5 109.973 H3 C1 Cl7 108.212
H4 C2 F6 109.973 H4 C2 Cl8 108.212
F5 C1 Cl7 109.334 F6 C2 Cl8 109.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability