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: 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-475.605755
Energy at 298.15K-475.609815
Nuclear repulsion energy271.597216
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' 3170 2968 13.34      
2 A' 1564 1464 5.21      
3 A' 1509 1413 22.56      
4 A' 1360 1273 142.98      
5 A' 1246 1167 262.16      
6 A' 1147 1074 70.52      
7 A' 865 810 19.22      
8 A' 668 625 30.88      
9 A' 549 514 9.44      
10 A' 413 386 0.78      
11 A' 216 202 3.22      
12 A" 3245 3039 14.40      
13 A" 1363 1277 139.40      
14 A" 1248 1168 63.54      
15 A" 1021 956 60.18      
16 A" 530 496 2.74      
17 A" 358 335 1.23      
18 A" 114 107 5.24      

Unscaled Zero Point Vibrational Energy (zpe) 10291.8 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 9638.3 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
0.17634 0.09320 0.09204

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 0.354 0.197 0.000
C2 -1.153 0.239 0.000
F3 0.832 1.463 0.000
F4 0.832 -0.433 1.089
F5 0.832 -0.433 -1.089
F6 -1.632 -1.057 0.000
H7 -1.492 0.761 0.893
H8 -1.492 0.761 -0.893

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 H7 H8
C11.50821.35301.34581.34582.34912.12672.1267
C21.50822.33222.36192.36191.38171.08821.0882
F31.35302.33222.18672.18673.52442.58652.5865
F41.34582.36192.18672.17782.76502.61963.2791
F51.34582.36192.18672.17782.76503.27912.6196
F62.34911.38173.52442.76502.76502.03012.0301
H72.12671.08822.58652.61963.27912.03011.7862
H82.12671.08822.58653.27912.61962.03011.7862

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 108.674 C1 C2 H7 108.913
C1 C2 H8 108.913 C2 C1 F3 109.072
C2 C1 F4 111.577 C2 C1 F5 111.577
F3 C1 F4 108.241 F3 C1 F5 108.241
F4 C1 F5 108.020 F6 C2 H7 109.993
F6 C2 H8 109.993 H7 C2 H8 110.316
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability