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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-574.121584
Energy at 298.15K-574.124767
HF Energy-573.314340
Nuclear repulsion energy348.649105
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
4/u)
Dep P Dep U
1 A' 3158 3043 7.95      
2 A' 1442 1389 2.47      
3 A' 1321 1273 105.49      
4 A' 1194 1151 172.80      
5 A' 1081 1041 84.94      
6 A' 844 814 66.31      
7 A' 669 645 34.04      
8 A' 528 509 24.67      
9 A' 475 458 16.03      
10 A' 343 331 0.12      
11 A' 239 230 6.32      
12 A" 1398 1347 6.95      
13 A" 1220 1176 243.11      
14 A" 1127 1086 85.51      
15 A" 549 529 2.01      
16 A" 387 373 3.20      
17 A" 204 197 4.42      
18 A" 75 73 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 8127.6 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 7831.8 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
0.11275 0.07731 0.06345

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 0.119 -0.596 0.000
C2 -0.627 0.739 0.000
F3 1.496 -0.426 0.000
F4 -0.242 -1.331 1.130
F5 -0.242 -1.331 -1.130
F6 -0.242 1.463 -1.148
F7 -0.242 1.463 1.148
H8 -1.712 0.605 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.52961.38781.39531.39532.38472.38472.1895
C21.52962.42212.38992.38991.41051.41051.0934
F31.38782.42212.26192.26192.81202.81203.3698
F41.39532.38992.26192.25953.60472.79392.6805
F51.39532.38992.26192.25952.79393.60472.6805
F62.38471.41052.81203.60472.79392.29612.0532
F72.38471.41052.81202.79393.60472.29612.0532
H82.18951.09343.36982.68052.68052.05322.0532

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.338 C1 C2 F7 108.338
C1 C2 H8 112.104 C2 C1 F3 112.152
C2 C1 F4 109.505 C2 C1 F5 109.505
F3 C1 F4 108.728 F3 C1 F5 108.728
F4 C1 F5 108.132 F6 C2 F7 108.965
F6 C2 H8 109.517 F7 C2 H8 109.517
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability