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: BLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at BLYP/STO-3G
 hartrees
Energy at 0K-1183.419871
Energy at 298.15K-1183.422522
HF Energy-1183.419871
Nuclear repulsion energy356.384585
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 BLYP/STO-3G
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 3151 2916 0.44      
2 A 1377 1274 15.27      
3 A 1249 1155 15.12      
4 A 1189 1100 114.37      
5 A 939 869 0.40      
6 A 760 703 50.34      
7 A 417 386 8.34      
8 A 250 231 0.16      
9 A 128 118 0.52      
10 A 44 40 1.23      
11 B 3159 2922 5.16      
12 B 1344 1243 13.43      
13 B 1191 1102 1.35      
14 B 1180 1092 34.76      
15 B 751 695 74.46      
16 B 416 385 10.35      
17 B 350 324 3.34      
18 B 270 250 10.04      

Unscaled Zero Point Vibrational Energy (zpe) 9081.2 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 8401.9 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 BLYP/STO-3G
ABC
0.08633 0.05345 0.03499

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.187 0.797 0.431
C2 0.187 -0.797 0.431
H3 -1.283 0.952 0.205
H4 1.283 -0.952 0.205
F5 0.187 1.378 1.638
F6 -0.187 -1.378 1.638
Cl7 0.749 1.611 -1.031
Cl8 -0.749 -1.611 -1.031

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.63641.13002.29531.39032.48651.91812.8725
C21.63642.29531.13002.48651.39032.87251.9181
H31.13002.29533.19502.09642.94612.46872.8948
H42.29531.13003.19502.94612.09642.89482.4687
F51.39032.48652.09642.94612.78052.73764.1148
F62.48651.39032.94612.09642.78054.11482.7376
Cl71.91812.87252.46872.89482.73764.11483.5533
Cl82.87251.91812.89482.46874.11482.73763.5533

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 110.807 C1 C2 F6 110.211
C1 C2 Cl8 107.565 C2 C1 H3 110.807
C2 C1 F5 110.211 C2 C1 Cl7 107.565
H3 C1 F5 112.159 H3 C1 Cl7 105.229
H4 C2 F6 112.159 H4 C2 Cl8 105.229
F5 C1 Cl7 110.672 F6 C2 Cl8 110.672
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.069      
2 C 0.069      
3 H 0.116      
4 H 0.116      
5 F -0.016      
6 F -0.016      
7 Cl -0.168      
8 Cl -0.168      


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 2.744 2.744
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.041 -3.532 0.000
y -3.532 -46.513 0.000
z 0.000 0.000 -44.525
Traceless
 xyz
x 3.478 -3.532 0.000
y -3.532 -3.230 0.000
z 0.000 0.000 -0.248
Polar
3z2-r2-0.496
x2-y24.472
xy-3.532
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.623 0.981 0.000
y 0.981 3.438 0.000
z 0.000 0.000 4.832


<r2> (average value of r2) Å2
<r2> 269.714
(<r2>)1/2 16.423