return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: MP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-574.670470
Energy at 298.15K-574.673857
HF Energy-573.534658
Nuclear repulsion energy357.480012
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 MP2/6-31+G**
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' 3223 3031 11.50      
2 A' 1485 1396 0.91      
3 A' 1339 1259 144.77      
4 A' 1210 1138 215.35      
5 A' 1144 1076 136.74      
6 A' 877 825 56.22      
7 A' 717 674 32.71      
8 A' 569 535 16.11      
9 A' 511 480 8.63      
10 A' 361 339 0.05      
11 A' 246 232 4.25      
12 A" 1400 1317 10.50      
13 A" 1228 1155 399.95      
14 A" 1156 1087 104.54      
15 A" 578 544 0.70      
16 A" 412 387 1.18      
17 A" 212 200 2.50      
18 A" 83 78 0.99      

Unscaled Zero Point Vibrational Energy (zpe) 8374.2 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 7876.7 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 MP2/6-31+G**
ABC
0.12027 0.08017 0.06617

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.119 -0.599 0.000
C2 -0.611 0.744 0.000
F3 1.451 -0.435 0.000
F4 -0.234 -1.306 1.095
F5 -0.234 -1.306 -1.095
F6 -0.234 1.441 -1.109
F7 -0.234 1.441 1.109
H8 -1.691 0.614 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.52911.34231.35011.35012.34902.34902.1790
C21.52912.37552.35492.35491.36321.36321.0882
F31.34232.37552.18992.18992.75482.75483.3127
F41.35012.35492.18992.19013.52222.74712.6475
F51.35012.35492.18992.19012.74713.52222.6475
F62.34901.36322.75483.52222.74712.21872.0099
F72.34901.36322.75482.74713.52222.21872.0099
H82.17901.08823.31272.64752.64752.00992.0099

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.482 C1 C2 F7 108.482
C1 C2 H8 111.615 C2 C1 F3 111.484
C2 C1 F4 109.595 C2 C1 F5 109.595
F3 C1 F4 108.850 F3 C1 F5 108.850
F4 C1 F5 108.405 F6 C2 F7 108.933
F6 C2 H8 109.638 F7 C2 H8 109.638
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability