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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-571.173727
Energy at 298.15K-571.177022
HF Energy-570.406253
Nuclear repulsion energy353.505652
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 MP2/3-21G
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' 3213 3067 22.46      
2 A' 1501 1433 8.63      
3 A' 1357 1295 126.44      
4 A' 1254 1197 177.17      
5 A' 1135 1083 64.86      
6 A' 873 833 51.27      
7 A' 696 664 32.52      
8 A' 547 522 22.86      
9 A' 501 478 14.69      
10 A' 352 336 0.12      
11 A' 232 221 6.18      
12 A" 1470 1403 19.38      
13 A" 1300 1241 254.33      
14 A" 1194 1140 50.45      
15 A" 574 548 2.28      
16 A" 400 382 2.49      
17 A" 195 186 4.28      
18 A" 75 71 0.90      

Unscaled Zero Point Vibrational Energy (zpe) 8434.4 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 8050.7 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 MP2/3-21G
ABC
0.11542 0.07973 0.06528

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.121 -0.593 0.000
C2 -0.615 0.731 0.000
F3 1.477 -0.420 0.000
F4 -0.240 -1.307 1.116
F5 -0.240 -1.307 -1.116
F6 -0.240 1.440 -1.137
F7 -0.240 1.440 1.137
H8 -1.687 0.560 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.51521.36721.37311.37312.35742.35742.1445
C21.51522.38802.35402.35401.39121.39121.0854
F31.36722.38802.23212.23212.77522.77523.3124
F41.37312.35402.23212.23153.55292.74742.6126
F51.37312.35402.23212.23152.74743.55292.6126
F62.35741.39122.77523.55292.74742.27402.0394
F72.35741.39122.77522.74743.55292.27402.0394
H82.14451.08543.31242.61262.61262.03942.0394

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.327 C1 C2 F7 108.327
C1 C2 H8 110.001 C2 C1 F3 111.781
C2 C1 F4 109.075 C2 C1 F5 109.075
F3 C1 F4 109.083 F3 C1 F5 109.083
F4 C1 F5 108.693 F6 C2 F7 109.624
F6 C2 H8 110.257 F7 C2 H8 110.257
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability