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: PBEPBEultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBEPBEultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-1196.984830
Energy at 298.15K-1196.988123
HF Energy-1196.984830
Nuclear repulsion energy374.565332
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 PBEPBEultrafine/aug-cc-pVTZ
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 3028 2994 0.04      
2 A 1326 1311 4.07      
3 A 1227 1214 4.63      
4 A 1070 1058 122.63      
5 A 1015 1004 146.17      
6 A 788 779 104.34      
7 A 439 434 1.96      
8 A 299 295 0.97      
9 A 157 155 0.30      
10 A 71 70 0.52      
11 B 3041 3007 7.65      
12 B 1276 1262 4.44      
13 B 1177 1164 19.56      
14 B 1018 1007 30.78      
15 B 778 769 86.61      
16 B 417 412 9.13      
17 B 370 366 6.45      
18 B 313 309 8.93      

Unscaled Zero Point Vibrational Energy (zpe) 8905.0 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 8805.3 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 PBEPBEultrafine/aug-cc-pVTZ
ABC
0.09630 0.05976 0.03838

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.222 0.734 0.402
C2 0.222 -0.734 0.402
H3 -1.314 0.829 0.345
H4 1.314 -0.829 0.345
F5 0.222 1.313 1.566
F6 -0.222 -1.313 1.566
Cl7 0.488 1.600 -0.991
Cl8 -0.488 -1.600 -0.991

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.53381.09752.19231.37422.35491.78742.7315
C21.53382.19231.09752.35491.37422.73151.7874
H31.09752.19233.10742.02072.69662.37212.8936
H42.19231.09753.10742.69662.02072.89362.3721
F51.37422.35492.02072.69662.66252.58773.9410
F62.35491.37422.69662.02072.66253.94102.5877
Cl71.78742.73152.37212.89362.58773.94103.3462
Cl82.73151.78742.89362.37213.94102.58773.3462

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 111.779 C1 C2 F6 108.031
C1 C2 Cl8 110.429 C2 C1 H3 111.779
C2 C1 F5 108.031 C2 C1 Cl7 110.429
H3 C1 F5 109.163 H3 C1 Cl7 108.238
H4 C2 F6 109.163 H4 C2 Cl8 108.238
F5 C1 Cl7 109.165 F6 C2 Cl8 109.165
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.298      
2 C 0.298      
3 H 0.248      
4 H 0.248      
5 F -0.361      
6 F -0.361      
7 Cl -0.186      
8 Cl -0.186      


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 -0.393 0.393
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.038 -2.273 0.000
y -2.273 -50.035 0.000
z 0.000 0.000 -50.415
Traceless
 xyz
x 5.186 -2.273 0.000
y -2.273 -2.308 0.000
z 0.000 0.000 -2.878
Polar
3z2-r2-5.757
x2-y24.996
xy-2.273
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.526 0.722 0.000
y 0.722 9.410 0.000
z 0.000 0.000 9.411


<r2> (average value of r2) Å2
<r2> 249.006
(<r2>)1/2 15.780