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**

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**
 hartrees
Energy at 0K-1196.924567
Energy at 298.15K-1196.928063
HF Energy-1196.627414
Nuclear repulsion energy376.308286
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**
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 3170 3170 0.60      
2 A 1430 1430 8.28      
3 A 1331 1331 22.95      
4 A 1153 1153 154.96      
5 A 1098 1098 95.62      
6 A 844 844 91.37      
7 A 459 459 2.24      
8 A 316 316 1.28      
9 A 165 165 0.72      
10 A 81 81 0.63      
11 B 3181 3181 14.66      
12 B 1373 1373 7.61      
13 B 1264 1264 34.03      
14 B 1118 1118 21.68      
15 B 830 830 115.08      
16 B 438 438 11.91      
17 B 389 389 8.02      
18 B 337 337 11.91      

Unscaled Zero Point Vibrational Energy (zpe) 9488.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9488.4 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/6-31G**
ABC
0.09781 0.05987 0.03859

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.226 0.729 0.394
C2 0.226 -0.729 0.394
H3 -1.310 0.808 0.347
H4 1.310 -0.808 0.347
F5 0.226 1.282 1.557
F6 -0.226 -1.282 1.557
Cl7 0.464 1.619 -0.984
Cl8 -0.464 -1.619 -0.984

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52551.08862.17301.36452.32261.77992.7330
C21.52552.17301.08862.32261.36452.73301.7799
H31.08862.17303.07872.01192.64722.36182.8948
H42.17301.08863.07872.64722.01192.89482.3618
F51.36452.32262.01192.64722.60322.57443.9179
F62.32261.36452.64722.01192.60323.91792.5744
Cl71.77992.73302.36182.89482.57443.91793.3690
Cl82.73301.77992.89482.36183.91792.57443.3690

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 111.361 C1 C2 F6 106.830
C1 C2 Cl8 111.313 C2 C1 H3 111.361
C2 C1 F5 106.830 C2 C1 Cl7 111.313
H3 C1 F5 109.681 H3 C1 Cl7 108.427
H4 C2 F6 109.681 H4 C2 Cl8 108.427
F5 C1 Cl7 109.200 F6 C2 Cl8 109.200
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability