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/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-1197.042284
Energy at 298.15K-1197.045731
HF Energy-1196.718345
Nuclear repulsion energy374.861454
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/aug-cc-pVDZ
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 3157 3157 0.06      
2 A 1386 1386 3.96      
3 A 1278 1278 8.34      
4 A 1127 1127 67.22      
5 A 1049 1049 200.46      
6 A 825 825 96.31      
7 A 454 454 0.81      
8 A 309 309 1.17      
9 A 165 165 0.36      
10 A 77 77 0.62      
11 B 3168 3168 6.38      
12 B 1322 1322 5.92      
13 B 1222 1222 21.95      
14 B 1048 1048 27.89      
15 B 816 816 93.46      
16 B 429 429 10.95      
17 B 383 383 7.67      
18 B 332 332 9.86      

Unscaled Zero Point Vibrational Energy (zpe) 9274.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9274.1 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/aug-cc-pVDZ
ABC
0.09684 0.05969 0.03841

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.227 0.730 0.399
C2 0.227 -0.730 0.399
H3 -1.317 0.822 0.357
H4 1.317 -0.822 0.357
F5 0.227 1.308 1.563
F6 -0.227 -1.308 1.563
Cl7 0.474 1.608 -0.989
Cl8 -0.474 -1.608 -0.989

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52881.09492.18951.37672.34711.78532.7301
C21.52882.18951.09492.34711.37672.73011.7853
H31.09492.18953.10502.01862.67962.37382.9032
H42.18951.09493.10502.67962.01862.90322.3738
F51.37672.34712.01862.67962.65512.58123.9379
F62.34711.37672.67962.01862.65513.93792.5812
Cl71.78532.73012.37382.90322.58123.93793.3530
Cl82.73011.78532.90322.37383.93792.58123.3530

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 112.074 C1 C2 F6 107.647
C1 C2 Cl8 110.692 C2 C1 H3 112.074
C2 C1 F5 107.647 C2 C1 Cl7 110.692
H3 C1 F5 108.982 H3 C1 Cl7 108.631
H4 C2 F6 108.982 H4 C2 Cl8 108.631
F5 C1 Cl7 108.747 F6 C2 Cl8 108.747
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.646      
2 C 0.646      
3 H -0.133      
4 H -0.133      
5 F -0.460      
6 F -0.460      
7 Cl -0.053      
8 Cl -0.053      


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 -0.561 0.561
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.180 -2.424 0.000
y -2.424 -50.600 0.000
z 0.000 0.000 -51.179
Traceless
 xyz
x 5.709 -2.424 0.000
y -2.424 -2.420 0.000
z 0.000 0.000 -3.288
Polar
3z2-r2-6.577
x2-y25.420
xy-2.424
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.016 0.715 0.000
y 0.715 8.750 0.000
z 0.000 0.000 8.870


<r2> (average value of r2) Å2
<r2> 249.092
(<r2>)1/2 15.783