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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-565.773116
Energy at 298.15K-565.775726
HF Energy-565.586171
Nuclear repulsion energy343.272210
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/STO-3G
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' 3308 2884 12.63      
2 A' 1495 1304 37.82      
3 A' 1369 1194 54.27      
4 A' 1246 1087 50.55      
5 A' 1199 1045 45.16      
6 A' 857 747 6.18      
7 A' 682 595 24.32      
8 A' 541 472 15.57      
9 A' 470 410 8.66      
10 A' 324 282 0.08      
11 A' 207 180 1.62      
12 A" 1507 1314 9.82      
13 A" 1391 1213 92.88      
14 A" 1293 1127 17.55      
15 A" 541 472 2.33      
16 A" 377 329 1.53      
17 A" 166 145 1.07      
18 A" 9 8 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 8490.6 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 7402.9 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/STO-3G
ABC
0.11361 0.07186 0.06000

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.125 -0.649 0.000
C2 -0.618 0.813 0.000
F3 1.507 -0.506 0.000
F4 -0.246 -1.371 1.129
F5 -0.246 -1.371 -1.129
F6 -0.246 1.534 -1.135
F7 -0.246 1.534 1.135
H8 -1.733 0.635 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.63981.39001.39081.39082.48802.48802.2584
C21.63982.50122.48652.48651.39481.39481.1293
F31.39002.50122.25832.25832.91932.91933.4354
F41.39082.48652.25832.25863.68292.90482.7402
F51.39082.48652.25832.25862.90483.68292.7402
F62.48801.39482.91933.68292.90482.26952.0752
F72.48801.39482.91932.90483.68292.26952.0752
H82.25841.12933.43542.74022.74022.07522.0752

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 109.882 C1 C2 F7 109.882
C1 C2 H8 107.861 C2 C1 F3 111.015
C2 C1 F4 109.991 C2 C1 F5 109.991
F3 C1 F4 108.606 F3 C1 F5 108.606
F4 C1 F5 108.576 F6 C2 F7 108.887
F6 C2 H8 110.160 F7 C2 H8 110.160
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability