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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: CISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/6-31G*
 hartrees
Energy at 0K-574.437805
Energy at 298.15K-574.441384
HF Energy-573.515374
Nuclear repulsion energy362.642015
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 CISD/6-31G*
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' 3291 3046 23.24      
2 A' 1590 1472 4.58      
3 A' 1440 1333 188.87      
4 A' 1321 1223 207.16      
5 A' 1232 1140 126.81      
6 A' 938 869 55.21      
7 A' 765 708 39.02      
8 A' 604 559 18.21      
9 A' 544 504 10.81      
10 A' 381 353 0.07      
11 A' 256 237 4.69      
12 A" 1501 1389 23.64      
13 A" 1364 1263 368.96      
14 A" 1272 1177 114.03      
15 A" 617 571 1.42      
16 A" 438 406 1.63      
17 A" 219 202 2.90      
18 A" 81 75 0.99      

Unscaled Zero Point Vibrational Energy (zpe) 8925.5 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 8263.2 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 CISD/6-31G*
ABC
0.12394 0.08242 0.06806

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.116 -0.594 0.000
C2 -0.603 0.739 0.000
F3 1.429 -0.428 0.000
F4 -0.229 -1.288 1.078
F5 -0.229 -1.288 -1.078
F6 -0.229 1.421 -1.093
F7 -0.229 1.421 1.093
H8 -1.678 0.604 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.51461.32271.32851.32852.31832.31832.1578
C21.51462.34322.32632.32631.34181.34181.0832
F31.32272.34322.15682.15682.71362.71363.2739
F41.32852.32632.15682.15683.47222.70932.6160
F51.32852.32632.15682.15682.70933.47222.6160
F62.31831.34182.71363.47222.70932.18641.9903
F72.31831.34182.71362.70933.47222.18641.9903
H82.15781.08323.27392.61602.61601.99031.9903

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.357 C1 C2 F7 108.357
C1 C2 H8 111.238 C2 C1 F3 111.177
C2 C1 F4 109.647 C2 C1 F5 109.647
F3 C1 F4 108.890 F3 C1 F5 108.890
F4 C1 F5 108.540 F6 C2 F7 109.124
F6 C2 H8 109.858 F7 C2 H8 109.858
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability