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 CF3CHF2 (pentafluoroethane)

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-576.032784
Energy at 298.15K-576.036037
HF Energy-576.032784
Nuclear repulsion energy359.473749
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 TPSSh/6-31G(2df,p)
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' 3076 2968 29.03      
2 A' 1435 1385 0.38      
3 A' 1307 1261 145.44      
4 A' 1197 1155 179.47      
5 A' 1147 1106 108.42      
6 A' 865 835 39.29      
7 A' 715 690 30.45      
8 A' 568 548 13.27      
9 A' 510 492 6.27      
10 A' 351 339 0.04      
11 A' 225 217 3.22      
12 A" 1386 1338 11.39      
13 A" 1224 1181 344.21      
14 A" 1153 1112 73.24      
15 A" 574 554 0.50      
16 A" 404 390 0.82      
17 A" 189 182 1.88      
18 A" 59 57 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 8191.9 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 7905.1 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 TPSSh/6-31G(2df,p)
ABC
0.12231 0.08063 0.06671

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.118 -0.603 0.000
C2 -0.608 0.752 0.000
F3 1.440 -0.439 0.000
F4 -0.231 -1.302 1.086
F5 -0.231 -1.302 -1.086
F6 -0.231 1.438 -1.099
F7 -0.231 1.438 1.099
H8 -1.695 0.618 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.53721.33221.33821.33822.34392.34392.1855
C21.53722.36882.35422.35421.34911.34911.0952
F31.33222.36882.17222.17222.74232.74233.3080
F41.33822.35422.17222.17253.50482.74012.6475
F51.33822.35422.17222.17252.74013.50482.6475
F62.34391.34912.74233.50482.74012.19802.0057
F72.34391.34912.74232.74013.50482.19802.0057
H82.18551.09523.30802.64752.64752.00572.0057

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.429 C1 C2 F7 108.429
C1 C2 H8 111.139 C2 C1 F3 111.086
C2 C1 F4 109.726 C2 C1 F5 109.726
F3 C1 F4 108.864 F3 C1 F5 108.864
F4 C1 F5 108.525 F6 C2 F7 109.102
F6 C2 H8 109.848 F7 C2 H8 109.848
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.291      
2 C 0.055      
3 F -0.085      
4 F -0.090      
5 F -0.090      
6 F -0.109      
7 F -0.109      
8 H 0.137      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.322 -0.051 0.000 1.322
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.009 -0.027 0.000
y -0.027 4.105 0.000
z 0.000 0.000 4.112


<r2> (average value of r2) Å2
<r2> 166.483
(<r2>)1/2 12.903