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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-130.693422
Energy at 298.15K-130.696863
HF Energy-130.693422
Nuclear repulsion energy199.535591
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' 3423 3086 12.47      
2 A' 1553 1400 2.20      
3 A' 1414 1274 137.77      
4 A' 1268 1143 200.07      
5 A' 1169 1053 150.18      
6 A' 897 808 79.77      
7 A' 723 652 48.15      
8 A' 576 519 31.03      
9 A' 515 464 22.13      
10 A' 369 332 0.27      
11 A' 254 229 8.60      
12 A" 1475 1329 6.61      
13 A" 1289 1162 353.23      
14 A" 1217 1097 119.52      
15 A" 586 529 3.13      
16 A" 419 378 3.89      
17 A" 219 197 6.08      
18 A" 73 66 2.25      

Unscaled Zero Point Vibrational Energy (zpe) 8718.7 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 7859.0 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
0.11819 0.07777 0.06448

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 0.120 -0.601 0.000
C2 -0.620 0.754 0.000
F3 1.472 -0.458 0.000
F4 -0.238 -1.323 1.104
F5 -0.238 -1.323 -1.104
F6 -0.238 1.466 -1.117
F7 -0.238 1.466 1.117
H8 -1.691 0.625 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.54411.35901.36631.36632.37692.37692.1873
C21.54412.41732.38282.38281.37831.37831.0795
F31.35902.41732.21062.21062.80582.80583.3432
F41.36632.38282.21062.20763.56492.78912.6691
F51.36632.38282.21062.20762.78913.56492.6691
F62.37691.37832.80583.56492.78912.23312.0170
F72.37691.37832.80582.78913.56492.23312.0170
H82.18731.07953.34322.66912.66912.01702.0170

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.707 C1 C2 F7 108.707
C1 C2 H8 111.740 C2 C1 F3 112.590
C2 C1 F4 109.758 C2 C1 F5 109.758
F3 C1 F4 108.415 F3 C1 F5 108.415
F4 C1 F5 107.775 F6 C2 F7 108.204
F6 C2 H8 109.702 F7 C2 H8 109.702
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 0.506      
2 C 0.336      
3 F -0.183      
4 F -0.199      
5 F -0.199      
6 F -0.243      
7 F -0.243      
8 H 0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.469 -0.074 0.000 2.470
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.830 -1.529 0.000
y -1.529 -42.417 0.000
z 0.000 0.000 -42.349
Traceless
 xyz
x 7.553 -1.529 0.000
y -1.529 -3.828 0.000
z 0.000 0.000 -3.725
Polar
3z2-r2-7.450
x2-y27.587
xy-1.529
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.834 0.143 0.000
y 0.143 2.845 0.000
z 0.000 0.000 3.275


<r2> (average value of r2) Å2
<r2> 140.780
(<r2>)1/2 11.865