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: HF/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/TZVP
 hartrees
Energy at 0K-1194.877613
Energy at 298.15K-1194.881385
HF Energy-1194.877613
Nuclear repulsion energy378.979805
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 HF/TZVP
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 3313 3010 0.45      
2 A 1556 1414 15.13      
3 A 1432 1301 18.92      
4 A 1249 1135 263.35      
5 A 1163 1057 77.33      
6 A 903 820 101.50      
7 A 494 449 1.28      
8 A 339 308 1.95      
9 A 179 163 0.81      
10 A 83 76 0.90      
11 B 3325 3021 11.24      
12 B 1489 1353 10.05      
13 B 1353 1229 42.84      
14 B 1217 1106 35.67      
15 B 897 815 135.87      
16 B 473 430 18.42      
17 B 425 386 9.09      
18 B 360 327 13.97      

Unscaled Zero Point Vibrational Energy (zpe) 10125.6 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 9200.2 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 HF/TZVP
ABC
0.10002 0.06010 0.03905

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.218 0.731 0.401
C2 0.218 -0.731 0.401
H3 -1.289 0.822 0.346
H4 1.289 -0.822 0.346
F5 0.218 1.287 1.534
F6 -0.218 -1.287 1.534
Cl7 0.486 1.607 -0.974
Cl8 -0.486 -1.607 -0.974

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52491.07622.16461.33552.31411.77582.7251
C21.52492.16461.07622.31411.33552.72511.7758
H31.07622.16463.05781.97442.64702.34702.8791
H42.16461.07623.05782.64701.97442.87912.3470
F51.33552.31411.97442.64702.61082.54253.8936
F62.31411.33552.64701.97442.61083.89362.5425
Cl71.77582.72512.34702.87912.54253.89363.3572
Cl82.72511.77582.87912.34703.89362.54253.3572

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 111.479 C1 C2 F6 107.808
C1 C2 Cl8 111.067 C2 C1 H3 111.479
C2 C1 F5 107.808 C2 C1 Cl7 111.067
H3 C1 F5 109.428 H3 C1 Cl7 108.240
H4 C2 F6 109.428 H4 C2 Cl8 108.240
F5 C1 Cl7 108.778 F6 C2 Cl8 108.778
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.219      
2 C 0.219      
3 H 0.127      
4 H 0.127      
5 F -0.226      
6 F -0.226      
7 Cl -0.120      
8 Cl -0.120      


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 -0.500 0.500
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -44.555 -2.874 0.000
y -2.874 -50.904 0.000
z 0.000 0.000 -51.464
Traceless
 xyz
x 6.629 -2.874 0.000
y -2.874 -2.895 0.000
z 0.000 0.000 -3.735
Polar
3z2-r2-7.469
x2-y26.349
xy-2.874
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.226 0.745 0.000
y 0.745 6.399 0.000
z 0.000 0.000 6.931


<r2> (average value of r2) Å2
<r2> 245.501
(<r2>)1/2 15.668