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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-574.636535
Energy at 298.15K-574.639945
HF Energy-573.512027
Nuclear repulsion energy359.065999
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 QCISD/6-31G*
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' 3158 3007 23.71      
2 A' 1516 1444 3.76      
3 A' 1378 1312 162.01      
4 A' 1261 1201 192.68      
5 A' 1174 1118 109.05      
6 A' 898 855 53.13      
7 A' 730 695 33.27      
8 A' 576 549 16.48      
9 A' 520 495 9.18      
10 A' 365 348 0.05      
11 A' 246 234 4.23      
12 A" 1439 1371 18.12      
13 A" 1300 1238 331.35      
14 A" 1209 1151 105.26      
15 A" 590 562 1.09      
16 A" 418 398 1.42      
17 A" 210 200 2.59      
18 A" 76 72 0.87      

Unscaled Zero Point Vibrational Energy (zpe) 8532.1 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 8125.1 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 QCISD/6-31G*
ABC
0.12115 0.08107 0.06684

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.117 -0.597 0.000
C2 -0.610 0.742 0.000
F3 1.444 -0.427 0.000
F4 -0.232 -1.300 1.091
F5 -0.232 -1.300 -1.091
F6 -0.232 1.432 -1.106
F7 -0.232 1.432 1.106
H8 -1.695 0.606 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.52281.33771.34381.34382.33652.33652.1750
C21.52282.36242.34542.34541.35751.35751.0940
F31.33772.36242.18142.18142.73552.73553.3044
F41.34382.34542.18142.18173.50552.73162.6394
F51.34382.34542.18142.18172.73163.50552.6394
F62.33651.35752.73553.50552.73162.21262.0118
F72.33651.35752.73552.73163.50552.21262.0118
H82.17501.09403.30442.63942.63942.01182.0118

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.292 C1 C2 F7 108.292
C1 C2 H8 111.384 C2 C1 F3 111.188
C2 C1 F4 109.654 C2 C1 F5 109.654
F3 C1 F4 108.879 F3 C1 F5 108.879
F4 C1 F5 108.537 F6 C2 F7 109.161
F6 C2 H8 109.831 F7 C2 H8 109.831
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability