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All results from a given calculation for CF3CHF2 (pentafluoroethane)

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 CS 1A'
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-130.904088
Energy at 298.15K-130.907763
HF Energy-130.904088
Nuclear repulsion energy204.346756
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 A' 3377 3033 39.00      
2 A' 1627 1461 2.66      
3 A' 1463 1313 246.37      
4 A' 1345 1208 200.88      
5 A' 1257 1129 189.16      
6 A' 949 852 54.71      
7 A' 788 707 48.64      
8 A' 627 563 20.13      
9 A' 565 507 13.38      
10 A' 391 351 0.15      
11 A' 263 236 5.69      
12 A" 1518 1363 27.21      
13 A" 1389 1247 443.16      
14 A" 1299 1166 153.52      
15 A" 634 569 1.86      
16 A" 450 405 1.63      
17 A" 227 204 3.63      
18 A" 81 73 1.25      

Unscaled Zero Point Vibrational Energy (zpe) 9124.2 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 8193.6 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
0.12518 0.08076 0.06717

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.122 -0.606 0.000
C2 -0.601 0.757 0.000
F3 1.431 -0.464 0.000
F4 -0.231 -1.295 1.072
F5 -0.231 -1.295 -1.072
F6 -0.231 1.442 -1.085
F7 -0.231 1.442 1.085
H8 -1.678 0.623 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.54301.31651.32251.32252.34452.34452.1795
C21.54302.37032.34482.34481.33561.33561.0855
F31.31652.37032.14512.14512.75172.75173.2933
F41.32252.34482.14512.14443.48512.73702.6310
F51.32252.34482.14512.14442.73703.48512.6310
F62.34451.33562.75173.48512.73702.17081.9856
F72.34451.33562.75172.73703.48512.17081.9856
H82.17951.08553.29332.63102.63101.98561.9856

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.859 C1 C2 F7 108.859
C1 C2 H8 110.827 C2 C1 F3 111.737
C2 C1 F4 109.589 C2 C1 F5 109.589
F3 C1 F4 108.757 F3 C1 F5 108.757
F4 C1 F5 108.342 F6 C2 F7 108.716
F6 C2 H8 109.769 F7 C2 H8 109.769
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 0.511      
2 C 0.294      
3 F -0.172      
4 F -0.182      
5 F -0.182      
6 F -0.220      
7 F -0.220      
8 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.789 -0.094 0.000 1.792
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.809 -1.034 0.000
y -1.034 -39.332 0.000
z 0.000 0.000 -39.077
Traceless
 xyz
x 5.396 -1.034 0.000
y -1.034 -2.889 0.000
z 0.000 0.000 -2.507
Polar
3z2-r2-5.014
x2-y25.523
xy-1.034
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.194 0.029 0.000
y 0.029 3.223 0.000
z 0.000 0.000 3.341


<r2> (average value of r2) Å2
<r2> 134.338
(<r2>)1/2 11.590