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/3-21G*

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/3-21G*
 hartrees
Energy at 0K-572.873570
Energy at 298.15K-572.876695
HF Energy-572.873570
Nuclear repulsion energy353.283554
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/3-21G*
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' 3140 3032 29.09      
2 A' 1452 1403 10.78      
3 A' 1308 1264 124.44      
4 A' 1206 1165 173.39      
5 A' 1109 1071 61.78      
6 A' 847 818 45.78      
7 A' 674 650 28.21      
8 A' 526 508 20.41      
9 A' 478 462 11.28      
10 A' 337 325 0.05      
11 A' 220 212 5.23      
12 A" 1410 1361 18.82      
13 A" 1251 1208 276.00      
14 A" 1149 1110 40.70      
15 A" 551 532 1.39      
16 A" 382 368 1.91      
17 A" 186 179 3.55      
18 A" 73 70 0.70      

Unscaled Zero Point Vibrational Energy (zpe) 8149.3 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 7869.8 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/3-21G*
ABC
0.11563 0.07936 0.06512

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.123 -0.594 0.000
C2 -0.615 0.734 0.000
F3 1.479 -0.428 0.000
F4 -0.241 -1.309 1.115
F5 -0.241 -1.309 -1.115
F6 -0.241 1.445 -1.134
F7 -0.241 1.445 1.134
H8 -1.689 0.558 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.51881.36641.37361.37362.36122.36122.1470
C21.51882.39472.35702.35701.38971.38971.0885
F31.36642.39472.23102.23102.78462.78463.3180
F41.37362.35702.23102.23053.55552.75372.6127
F51.37362.35702.23102.23052.75373.55552.6127
F62.36121.38972.78463.55552.75372.26802.0417
F72.36121.38972.78462.75373.55552.26802.0417
H82.14701.08853.31802.61272.61272.04172.0417

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.470 C1 C2 F7 108.470
C1 C2 H8 109.763 C2 C1 F3 112.082
C2 C1 F4 109.049 C2 C1 F5 109.049
F3 C1 F4 109.017 F3 C1 F5 109.017
F4 C1 F5 108.563 F6 C2 F7 109.378
F6 C2 H8 110.357 F7 C2 H8 110.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.766      
2 C 0.307      
3 F -0.257      
4 F -0.265      
5 F -0.265      
6 F -0.266      
7 F -0.266      
8 H 0.245      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.540 -0.109 0.000 1.543
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 2.906 0.122 0.000
y 0.122 2.767 0.000
z 0.000 0.000 3.145


<r2> (average value of r2) Å2
<r2> 171.112
(<r2>)1/2 13.081