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 CF3CH2F (1,1,1,2-tetrafluoroethane)

using model chemistry: MP4/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-311G**
 hartrees
Energy at 0K-475.931025
Energy at 298.15K-475.935079
Nuclear repulsion energy271.654737
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 MP4/6-311G**
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' 3096 3002        
2 A' 1509 1463        
3 A' 1476 1431        
4 A' 1328 1288        
5 A' 1213 1177        
6 A' 1123 1089        
7 A' 847 822        
8 A' 666 645        
9 A' 550 533        
10 A' 412 400        
11 A' 219 213        
12 A" 3163 3067        
13 A" 1334 1293        
14 A" 1227 1190        
15 A" 991 961        
16 A" 533 517        
17 A" 353 342        
18 A" 111 108        

Unscaled Zero Point Vibrational Energy (zpe) 10075.0 cm-1
Scaled (by 0.9697) Zero Point Vibrational Energy (zpe) 9769.7 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 MP4/6-311G**
ABC
0.17703 0.09286 0.09162

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.362 0.194 0.000
C2 -1.156 0.240 0.000
F3 0.837 1.455 0.000
F4 0.837 -0.434 1.085
F5 0.837 -0.434 -1.085
F6 -1.650 -1.045 0.000
H7 -1.489 0.764 0.901
H8 -1.489 0.764 -0.901

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 H7 H8
C11.51811.34811.34081.34082.36252.13612.1361
C21.51812.33392.36712.36711.37691.09441.0944
F31.34812.33392.17902.17903.52652.58842.5884
F41.34082.36712.17902.17032.78132.62343.2852
F51.34082.36712.17902.17032.78133.28522.6234
F62.36251.37693.52652.78132.78132.02762.0276
H72.13611.09442.58842.62343.28522.02761.8017
H82.13611.09442.58843.28522.62342.02761.8017

picture of 1,1,1,2-tetrafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 109.291 C1 C2 H7 108.618
C1 C2 H8 108.618 C2 C1 F3 108.889
C2 C1 F4 111.632 C2 C1 F5 111.632
F3 C1 F4 108.261 F3 C1 F5 108.261
F4 C1 F5 108.056 F6 C2 H7 109.737
F6 C2 H8 109.737 H7 C2 H8 110.806
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability