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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: CID/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 CID/3-21G
 hartrees
Energy at 0K-571.073355
Energy at 298.15K-571.076786
HF Energy-570.409662
Nuclear repulsion energy356.738251
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 CID/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' 3285 3061 17.38      
2 A' 1547 1442 10.06      
3 A' 1421 1323 150.77      
4 A' 1312 1222 180.84      
5 A' 1184 1103 77.90      
6 A' 906 844 53.02      
7 A' 724 675 40.52      
8 A' 568 529 26.08      
9 A' 519 484 18.13      
10 A' 364 339 0.19      
11 A' 240 224 6.98      
12 A" 1503 1401 24.39      
13 A" 1371 1277 269.82      
14 A" 1257 1171 59.86      
15 A" 595 554 3.15      
16 A" 417 389 3.09      
17 A" 201 187 4.75      
18 A" 76 71 1.16      

Unscaled Zero Point Vibrational Energy (zpe) 8744.9 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 8146.7 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 CID/3-21G
ABC
0.11806 0.08085 0.06635

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.120 -0.590 0.000
C2 -0.610 0.730 0.000
F3 1.463 -0.423 0.000
F4 -0.238 -1.298 1.103
F5 -0.238 -1.298 -1.103
F6 -0.238 1.432 -1.124
F7 -0.238 1.432 1.124
H8 -1.676 0.561 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.50881.35261.35811.35812.34082.34082.1341
C21.50882.37192.33772.33771.37621.37621.0795
F31.35262.37192.20712.20712.75572.75573.2897
F41.35812.33772.20712.20563.52212.72932.5962
F51.35812.33772.20712.20562.72933.52212.5962
F62.34081.37622.75573.52212.72932.24712.0226
F72.34081.37622.75572.72933.52212.24712.0226
H82.13411.07953.28972.59622.59622.02262.0226

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.374 C1 C2 F7 108.374
C1 C2 H8 109.970 C2 C1 F3 111.864
C2 C1 F4 109.144 C2 C1 F5 109.144
F3 C1 F4 109.021 F3 C1 F5 109.021
F4 C1 F5 108.588 F6 C2 F7 109.452
F6 C2 H8 110.312 F7 C2 H8 110.312
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability