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/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/6-31G(2df,p)
 hartrees
Energy at 0K-1197.011411
Energy at 298.15K-1197.014884
HF Energy-1196.650125
Nuclear repulsion energy377.387960
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/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 3141 3000 0.48      
2 A 1413 1349 9.47      
3 A 1304 1246 11.07      
4 A 1155 1103 183.62      
5 A 1086 1037 65.20      
6 A 834 797 84.56      
7 A 457 437 2.22      
8 A 313 299 1.22      
9 A 163 156 0.52      
10 A 78 74 0.61      
11 B 3153 3011 10.70      
12 B 1362 1300 6.38      
13 B 1236 1181 30.94      
14 B 1121 1070 20.08      
15 B 822 785 103.10      
16 B 437 417 10.62      
17 B 387 370 6.22      
18 B 331 316 10.35      

Unscaled Zero Point Vibrational Energy (zpe) 9396.2 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 8973.4 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/6-31G(2df,p)
ABC
0.09826 0.06021 0.03888

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.219 0.732 0.398
C2 0.219 -0.732 0.398
H3 -1.303 0.823 0.329
H4 1.303 -0.823 0.329
F5 0.219 1.284 1.550
F6 -0.219 -1.284 1.550
Cl7 0.498 1.601 -0.981
Cl8 -0.498 -1.601 -0.981

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52871.08992.17711.35112.32301.78002.7244
C21.52872.17711.08992.32301.35112.72441.7800
H31.08992.17713.08222.00502.66602.35912.8706
H42.17711.08993.08222.66602.00502.87062.3591
F51.35112.32302.00502.66602.60592.56603.9047
F62.32301.35112.66602.00502.60593.90472.5660
Cl71.78002.72442.35912.87062.56603.90473.3538
Cl82.72441.78002.87062.35913.90472.56603.3538

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 111.385 C1 C2 F6 107.379
C1 C2 Cl8 110.627 C2 C1 H3 111.385
C2 C1 F5 107.379 C2 C1 Cl7 110.627
H3 C1 F5 109.981 H3 C1 Cl7 108.152
H4 C2 F6 109.981 H4 C2 Cl8 108.152
F5 C1 Cl7 109.306 F6 C2 Cl8 109.306
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.096      
2 C 0.096      
3 H 0.169      
4 H 0.169      
5 F -0.131      
6 F -0.131      
7 Cl -0.134      
8 Cl -0.134      


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 0.022 0.022
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -44.272 -2.312 0.000
y -2.312 -49.381 0.000
z 0.000 0.000 -49.280
Traceless
 xyz
x 5.058 -2.312 0.000
y -2.312 -2.605 0.000
z 0.000 0.000 -2.454
Polar
3z2-r2-4.908
x2-y25.109
xy-2.312
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.777 0.741 0.000
y 0.741 7.285 0.000
z 0.000 0.000 7.467


<r2> (average value of r2) Å2
<r2> 245.760
(<r2>)1/2 15.677