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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: CCD/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 CCD/3-21G*
 hartrees
Energy at 0K-571.174978
Energy at 298.15K-571.178277
HF Energy-570.407238
Nuclear repulsion energy354.148531
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 CCD/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' 3165 3027 20.72      
2 A' 1496 1431 11.88      
3 A' 1368 1309 132.24      
4 A' 1269 1214 162.11      
5 A' 1142 1093 64.69      
6 A' 874 836 47.69      
7 A' 699 669 35.93      
8 A' 549 526 23.87      
9 A' 504 482 16.27      
10 A' 353 337 0.16      
11 A' 232 222 6.38      
12 A" 1461 1397 20.27      
13 A" 1329 1271 234.87      
14 A" 1216 1163 52.64      
15 A" 577 552 2.83      
16 A" 404 386 2.74      
17 A" 195 186 4.31      
18 A" 74 71 1.00      

Unscaled Zero Point Vibrational Energy (zpe) 8452.9 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 8085.2 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 CCD/3-21G*
ABC
0.11618 0.07980 0.06543

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.121 -0.595 0.000
C2 -0.614 0.734 0.000
F3 1.474 -0.424 0.000
F4 -0.239 -1.306 1.112
F5 -0.239 -1.306 -1.112
F6 -0.239 1.441 -1.133
F7 -0.239 1.441 1.133
H8 -1.689 0.561 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.51871.36291.36821.36822.35732.35732.1481
C21.51872.38702.35322.35321.38691.38691.0891
F31.36292.38702.22472.22472.77372.77373.3126
F41.36822.35322.22472.22343.54732.74682.6122
F51.36822.35322.22472.22342.74683.54732.6122
F62.35731.38692.77373.54732.74682.26612.0396
F72.35731.38692.77372.74683.54732.26612.0396
H82.14811.08913.31262.61222.61222.03962.0396

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.361 C1 C2 F7 108.361
C1 C2 H8 109.826 C2 C1 F3 111.748
C2 C1 F4 109.091 C2 C1 F5 109.091
F3 C1 F4 109.086 F3 C1 F5 109.086
F4 C1 F5 108.686 F6 C2 F7 109.557
F6 C2 H8 110.343 F7 C2 H8 110.343
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability