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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-574.615428
Energy at 298.15K-574.618823
HF Energy-573.511604
Nuclear repulsion energy358.886333
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 MP2/6-31G*
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' 3193 3011 22.68      
2 A' 1514 1427 3.25      
3 A' 1371 1293 150.67      
4 A' 1250 1179 204.94      
5 A' 1170 1104 107.76      
6 A' 896 845 54.67      
7 A' 727 686 31.63      
8 A' 574 541 15.82      
9 A' 517 488 8.41      
10 A' 364 343 0.04      
11 A' 245 231 4.11      
12 A" 1442 1360 16.74      
13 A" 1281 1208 343.70      
14 A" 1198 1130 98.67      
15 A" 588 554 0.86      
16 A" 417 393 1.32      
17 A" 209 197 2.50      
18 A" 76 72 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 8516.0 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 8030.6 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 MP2/6-31G*
ABC
0.12078 0.08116 0.06684

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.116 -0.596 0.000
C2 -0.610 0.740 0.000
F3 1.445 -0.423 0.000
F4 -0.232 -1.300 1.093
F5 -0.232 -1.300 -1.093
F6 -0.232 1.430 -1.108
F7 -0.232 1.430 1.108
H8 -1.693 0.606 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.52071.33941.34581.34582.33522.33522.1722
C21.52072.36122.34502.34501.35891.35891.0917
F31.33942.36122.18492.18492.73382.73383.3023
F41.34582.34502.18492.18553.50662.72992.6383
F51.34582.34502.18492.18552.72993.50662.6383
F62.33521.35892.73383.50662.72992.21652.0107
F72.33521.35892.73382.72993.50662.21652.0107
H82.17221.09173.30232.63832.63832.01072.0107

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.244 C1 C2 F7 108.244
C1 C2 H8 111.447 C2 C1 F3 111.129
C2 C1 F4 109.634 C2 C1 F5 109.634
F3 C1 F4 108.910 F3 C1 F5 108.910
F4 C1 F5 108.577 F6 C2 F7 109.280
F6 C2 H8 109.788 F7 C2 H8 109.788
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability