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: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-1196.928189
Energy at 298.15K-1196.931685
HF Energy-1196.928189
Nuclear repulsion energy377.649291
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 HSEh1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3141 2997 0.54      
2 A 1417 1352 12.22      
3 A 1314 1254 16.65      
4 A 1165 1112 213.68      
5 A 1100 1050 52.22      
6 A 845 806 90.93      
7 A 463 442 2.50      
8 A 314 300 1.20      
9 A 164 156 0.71      
10 A 80 77 0.65      
11 B 3152 3008 14.15      
12 B 1359 1297 7.07      
13 B 1245 1188 30.05      
14 B 1141 1088 24.83      
15 B 833 795 115.84      
16 B 439 419 11.17      
17 B 391 373 7.57      
18 B 335 319 12.42      

Unscaled Zero Point Vibrational Energy (zpe) 9448.6 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 9016.8 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 HSEh1PBE/6-31G**
ABC
0.09842 0.06035 0.03891

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

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 -1.310 0.812 0.339
H4 1.310 -0.812 0.339
F5 0.222 1.281 1.551
F6 -0.222 -1.281 1.551
Cl7 0.474 1.607 -0.981
Cl8 -0.474 -1.607 -0.981

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52551.09282.17441.35492.31871.77442.7237
C21.52552.17441.09282.31871.35492.72371.7744
H31.09282.17443.08302.00912.65152.35772.8800
H42.17441.09283.08302.65152.00912.88002.3577
F51.35492.31872.00912.65152.59972.56473.9030
F62.31871.35492.65152.00912.59973.90302.5647
Cl71.77442.72372.35772.88002.56473.90303.3515
Cl82.72371.77442.88002.35773.90302.56473.3515

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 111.215 C1 C2 F6 107.071
C1 C2 Cl8 111.037 C2 C1 H3 111.215
C2 C1 F5 107.071 C2 C1 Cl7 111.037
H3 C1 F5 109.870 H3 C1 Cl7 108.277
H4 C2 F6 109.870 H4 C2 Cl8 108.277
F5 C1 Cl7 109.357 F6 C2 Cl8 109.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.072      
2 C 0.072      
3 H 0.195      
4 H 0.195      
5 F -0.259      
6 F -0.259      
7 Cl -0.008      
8 Cl -0.008      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.023 0.023
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -44.121 -2.344 0.000
y -2.344 -49.497 0.000
z 0.000 0.000 -49.178
Traceless
 xyz
x 5.216 -2.344 0.000
y -2.344 -2.847 0.000
z 0.000 0.000 -2.369
Polar
3z2-r2-4.738
x2-y25.376
xy-2.344
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.001 0.751 0.000
y 0.751 6.393 0.000
z 0.000 0.000 6.822


<r2> (average value of r2) Å2
<r2> 245.441
(<r2>)1/2 15.667