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 CHFClCHClF (ethane, 1,2-dichloro-1,2-difluoro-)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CI 1AG
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-89.236167
Energy at 298.15K-89.239856
HF Energy-89.236167
Nuclear repulsion energy136.900969
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/CEP-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3388 3043 0.00      
2 Ag 1558 1399 0.00      
3 Ag 1450 1302 0.00      
4 Ag 1245 1118 0.00      
5 Ag 1186 1065 0.00      
6 Ag 910 817 0.00      
7 Ag 555 498 0.00      
8 Ag 405 364 0.00      
9 Ag 287 258 0.00      
10 Au 3399 3052 33.11      
11 Au 1451 1303 49.14      
12 Au 1354 1216 66.44      
13 Au 1249 1121 353.56      
14 Au 853 766 255.82      
15 Au 433 389 5.21      
16 Au 399 358 38.69      
17 Au 184 165 1.67      
18 Au 76 69 1.05      

Unscaled Zero Point Vibrational Energy (zpe) 10190.5 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 9151.1 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 HF/CEP-31G*
ABC
0.13614 0.04855 0.03697

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

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.769
C2 0.000 0.000 0.769
H3 1.007 0.000 -1.167
H4 -1.007 0.000 1.167
F5 -0.659 -1.091 -1.203
F6 0.659 1.091 1.203
Cl7 -0.837 1.450 -1.372
Cl8 0.837 -1.450 1.372

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.53871.08232.18231.34642.34851.77972.7186
C21.53872.18231.08232.34851.34642.71861.7797
H31.08232.18233.08231.99172.63202.35462.9292
H42.18231.08233.08232.63201.99172.92922.3546
F51.34642.34851.99172.63203.50552.55283.0003
F62.34851.34642.63201.99173.50553.00032.5528
Cl71.77972.71862.35462.92922.55283.00034.3299
Cl82.71861.77972.92922.35463.00032.55284.3299

picture of ethane, 1,2-dichloro-1,2-difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 111.553 C1 C2 F6 108.795
C1 C2 Cl8 109.806 C2 C1 H3 111.553
C2 C1 F5 108.795 C2 C1 Cl7 109.806
H3 C1 F5 109.705 H3 C1 Cl7 108.235
H4 C2 F6 109.705 H4 C2 Cl8 108.235
F5 C1 Cl7 108.702 F6 C2 Cl8 108.702
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.150      
2 C 0.150      
3 H 0.197      
4 H 0.197      
5 F -0.230      
6 F -0.230      
7 Cl -0.117      
8 Cl -0.117      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.275 -0.956 -4.288
y -0.956 -49.441 -0.784
z -4.288 -0.784 -47.743
Traceless
 xyz
x 3.317 -0.956 -4.288
y -0.956 -2.932 -0.784
z -4.288 -0.784 -0.385
Polar
3z2-r2-0.769
x2-y24.166
xy-0.956
xz-4.288
yz-0.784


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.899 -1.623 0.924
y -1.623 7.212 -1.543
z 0.924 -1.543 5.402


<r2> (average value of r2) Å2
<r2> 147.772
(<r2>)1/2 12.156