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/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-1194.911464
Energy at 298.15K-1194.915212
HF Energy-1194.911464
Nuclear repulsion energy378.334214
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/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 Ag 3294 2999 0.00      
2 Ag 1553 1414 0.00      
3 Ag 1440 1311 0.00      
4 Ag 1244 1132 0.00      
5 Ag 1180 1074 0.00      
6 Ag 895 815 0.00      
7 Ag 561 511 0.00      
8 Ag 406 370 0.00      
9 Ag 288 263 0.00      
10 Au 3307 3010 10.33      
11 Au 1456 1326 23.49      
12 Au 1352 1230 50.12      
13 Au 1247 1136 289.15      
14 Au 833 758 257.00      
15 Au 436 397 3.24      
16 Au 406 369 30.79      
17 Au 185 168 0.97      
18 Au 80 73 0.83      

Unscaled Zero Point Vibrational Energy (zpe) 10080.3 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 9177.1 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/aug-cc-pVTZ
ABC
0.13848 0.04917 0.03746

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

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.761
C2 0.000 0.000 0.761
H3 1.002 0.000 -1.153
H4 -1.002 0.000 1.153
F5 -0.660 -1.070 -1.199
F6 0.660 1.070 1.199
Cl7 -0.815 1.457 -1.359
Cl8 0.815 -1.457 1.359

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52141.07602.15991.33132.32831.77322.6980
C21.52142.15991.07602.32831.33132.69801.7732
H31.07602.15993.05481.97702.60642.33782.9097
H42.15991.07603.05482.60641.97702.90972.3378
F51.33132.32831.97702.60643.47452.53662.9779
F62.32831.33132.60641.97703.47452.97792.5366
Cl71.77322.69802.33782.90972.53662.97794.3049
Cl82.69801.77322.90972.33782.97792.53664.3049

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 111.368 C1 C2 F6 109.230
C1 C2 Cl8 109.720 C2 C1 H3 111.368
C2 C1 F5 109.230 C2 C1 Cl7 109.720
H3 C1 F5 109.968 H3 C1 Cl7 107.751
H4 C2 F6 109.968 H4 C2 Cl8 107.751
F5 C1 Cl7 108.757 F6 C2 Cl8 108.757
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.368      
2 C 0.368      
3 H 0.346      
4 H 0.346      
5 F -0.442      
6 F -0.442      
7 Cl -0.273      
8 Cl -0.273      


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 -46.701 -0.989 -3.957
y -0.989 -50.525 -0.725
z -3.957 -0.725 -48.571
Traceless
 xyz
x 2.848 -0.989 -3.957
y -0.989 -2.889 -0.725
z -3.957 -0.725 0.042
Polar
3z2-r20.084
x2-y23.825
xy-0.989
xz-3.957
yz-0.725


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.040 -1.057 0.833
y -1.057 8.744 -1.334
z 0.833 -1.334 7.653


<r2> (average value of r2) Å2
<r2> 253.810
(<r2>)1/2 15.931