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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: QCISD(T)/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(T)/6-31G*
 hartrees
Energy at 0K-574.659650
Energy at 298.15K-574.663018
HF Energy-573.511215
Nuclear repulsion energy358.518602
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(T)/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' 3136 3009        
2 A' 1500 1439        
3 A' 1365 1309        
4 A' 1247 1197        
5 A' 1162 1115        
6 A' 889 853        
7 A' 723 693        
8 A' 570 547        
9 A' 515 494        
10 A' 362 347        
11 A' 243 234        
12 A" 1428 1370        
13 A" 1284 1232        
14 A" 1194 1146        
15 A" 584 560        
16 A" 414 397        
17 A" 207 199        
18 A" 74 71        

Unscaled Zero Point Vibrational Energy (zpe) 8449.0 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 8105.1 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(T)/6-31G*
ABC
0.12064 0.08093 0.06668

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.117 -0.597 0.000
C2 -0.611 0.742 0.000
F3 1.446 -0.425 0.000
F4 -0.232 -1.302 1.093
F5 -0.232 -1.302 -1.093
F6 -0.232 1.432 -1.109
F7 -0.232 1.432 1.109
H8 -1.698 0.606 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.52411.33991.34651.34652.33882.33882.1783
C21.52412.36482.34802.34801.36011.36011.0957
F31.33992.36482.18612.18612.73752.73753.3091
F41.34652.34802.18612.18633.51022.73372.6430
F51.34652.34802.18612.18632.73373.51022.6430
F62.33881.36012.73753.51022.73372.21762.0152
F72.33881.36012.73752.73373.51022.21762.0152
H82.17831.09573.30912.64302.64302.01522.0152

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.233 C1 C2 F7 108.233
C1 C2 H8 111.457 C2 C1 F3 111.154
C2 C1 F4 109.606 C2 C1 F5 109.606
F3 C1 F4 108.933 F3 C1 F5 108.933
F4 C1 F5 108.562 F6 C2 F7 109.215
F6 C2 H8 109.825 F7 C2 H8 109.825
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability