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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-571.204271
Energy at 298.15K-571.207490
HF Energy-570.404699
Nuclear repulsion energy352.306556
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 MP4/3-21G
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' 3142 3047        
2 A' 1472 1428        
3 A' 1330 1290        
4 A' 1233 1196        
5 A' 1113 1080        
6 A' 854 828        
7 A' 682 662        
8 A' 537 521        
9 A' 493 478        
10 A' 345 335        
11 A' 227 220        
12 A" 1444 1400        
13 A" 1283 1244        
14 A" 1175 1140        
15 A" 564 547        
16 A" 393 382        
17 A" 190 184        
18 A" 72 69        

Unscaled Zero Point Vibrational Energy (zpe) 8274.4 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 8024.5 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 MP4/3-21G
ABC
0.11476 0.07913 0.06481

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.121 -0.596 0.000
C2 -0.618 0.736 0.000
F3 1.481 -0.422 0.000
F4 -0.240 -1.313 1.119
F5 -0.240 -1.313 -1.119
F6 -0.240 1.446 -1.140
F7 -0.240 1.446 1.140
H8 -1.695 0.565 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.52321.37141.37711.37712.36642.36642.1559
C21.52322.39732.36432.36431.39521.39521.0908
F31.37142.39732.23862.23862.78422.78423.3265
F41.37712.36432.23862.23833.56542.75832.6256
F51.37712.36432.23862.23832.75833.56542.6256
F62.36641.39522.78423.56542.75832.28022.0475
F72.36641.39522.78422.75833.56542.28022.0475
H82.15591.09083.32652.62562.62562.04752.0475

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.278 C1 C2 F7 108.278
C1 C2 H8 110.029 C2 C1 F3 111.725
C2 C1 F4 109.105 C2 C1 F5 109.105
F3 C1 F4 109.070 F3 C1 F5 109.070
F4 C1 F5 108.714 F6 C2 F7 109.601
F6 C2 H8 110.302 F7 C2 H8 110.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability