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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-571.177010
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 3057 22.46      
2 A' 1501 1428 8.63      
3 A' 1357 1291 126.44      
4 A' 1254 1193 177.17      
5 A' 1135 1080 64.86      
6 A' 873 830 51.27      
7 A' 696 662 32.52      
8 A' 547 520 22.86      
9 A' 501 477 14.69      
10 A' 352 335 0.12      
11 A' 232 221 6.18      
12 A" 1470 1399 19.38      
13 A" 1300 1237 254.33      
14 A" 1194 1136 50.45      
15 A" 574 546 2.28      
16 A" 400 381 2.49      
17 A" 195 185 4.28      
18 A" 75 71 0.90      

Unscaled Zero Point Vibrational Energy (zpe) 8434.4 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 8023.7 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