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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: MP2/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-574.964669
Energy at 298.15K-574.968144
HF Energy-573.546047
Nuclear repulsion energy362.270619
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(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3156 2981 21.81      
2 A' 1502 1419 3.26      
3 A' 1363 1288 150.59      
4 A' 1253 1184 183.91      
5 A' 1184 1118 91.56      
6 A' 900 850 41.06      
7 A' 739 698 31.04      
8 A' 587 554 13.82      
9 A' 530 501 7.21      
10 A' 369 349 0.03      
11 A' 245 231 3.50      
12 A" 1426 1346 15.25      
13 A" 1289 1218 334.30      
14 A" 1208 1141 75.01      
15 A" 597 564 0.75      
16 A" 422 398 0.96      
17 A" 208 197 1.98      
18 A" 82 78 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 8529.9 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 8056.5 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 MP2/6-31G(2df,p)
ABC
0.12366 0.08234 0.06794

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.116 -0.598 0.000
C2 -0.606 0.743 0.000
F3 1.427 -0.420 0.000
F4 -0.228 -1.292 1.080
F5 -0.228 -1.292 -1.080
F6 -0.228 1.420 -1.095
F7 -0.228 1.420 1.095
H8 -1.690 0.606 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.52351.32371.32871.32872.32182.32182.1703
C21.52352.34272.33462.33461.34131.34131.0923
F31.32372.34272.16032.16032.70652.70653.2816
F41.32872.33462.16032.16033.47602.71162.6274
F51.32872.33462.16032.16032.71163.47602.6274
F62.32181.34132.70653.47602.71162.18931.9993
F72.32181.34132.70652.71163.47602.18931.9993
H82.17031.09233.28162.62742.62741.99931.9993

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.109 C1 C2 F7 108.109
C1 C2 H8 111.055 C2 C1 F3 110.541
C2 C1 F4 109.680 C2 C1 F5 109.680
F3 C1 F4 109.073 F3 C1 F5 109.073
F4 C1 F5 108.763 F6 C2 F7 109.397
F6 C2 H8 110.058 F7 C2 H8 110.058
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability