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/3-21G*

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/3-21G*
 hartrees
Energy at 0K-1191.179758
Energy at 298.15K-1191.183087
HF Energy-1190.943623
Nuclear repulsion energy372.969749
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/3-21G*
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 3180 3180 1.46      
2 A 1431 1431 0.65      
3 A 1337 1337 24.04      
4 A 1114 1114 110.16      
5 A 1053 1053 46.55      
6 A 801 801 85.86      
7 A 431 431 4.10      
8 A 289 289 1.27      
9 A 162 162 1.39      
10 A 78 78 0.69      
11 B 3195 3195 7.69      
12 B 1369 1369 3.72      
13 B 1291 1291 23.24      
14 B 1082 1082 10.23      
15 B 772 772 111.96      
16 B 403 403 8.32      
17 B 366 366 19.58      
18 B 339 339 10.34      

Unscaled Zero Point Vibrational Energy (zpe) 9346.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9346.4 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/3-21G*
ABC
0.09431 0.06018 0.03810

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.244 0.724 0.409
C2 0.244 -0.724 0.409
H3 -1.329 0.768 0.379
H4 1.329 -0.768 0.379
F5 0.244 1.310 1.585
F6 -0.244 -1.310 1.585
Cl7 0.407 1.615 -1.006
Cl8 -0.407 -1.615 -1.006

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52791.08622.16801.40122.34941.79432.7383
C21.52792.16801.08622.34941.40122.73831.7943
H31.08622.16803.06952.05452.63642.37612.9060
H42.16801.08623.06952.63642.05452.90602.3761
F51.40122.34942.05452.63642.66542.61373.9610
F62.34941.40122.63642.05452.66543.96102.6137
Cl71.79432.73832.37612.90602.61373.96103.3300
Cl82.73831.79432.90602.37613.96102.61373.3300

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 110.936 C1 C2 F6 106.582
C1 C2 Cl8 110.771 C2 C1 H3 110.936
C2 C1 F5 106.582 C2 C1 Cl7 110.771
H3 C1 F5 110.741 H3 C1 Cl7 108.655
H4 C2 F6 110.741 H4 C2 Cl8 108.655
F5 C1 Cl7 109.140 F6 C2 Cl8 109.140
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability