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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-574.644628
Energy at 298.15K-574.648059
HF Energy-573.514016
Nuclear repulsion energy359.137021
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' 3191 3004 26.25      
2 A' 1522 1433 2.43      
3 A' 1380 1299 160.67      
4 A' 1264 1190 195.40      
5 A' 1175 1106 110.33      
6 A' 898 845 52.48      
7 A' 730 687 33.06      
8 A' 577 543 16.22      
9 A' 520 490 9.20      
10 A' 366 344 0.04      
11 A' 246 232 4.19      
12 A" 1445 1360 20.07      
13 A" 1301 1225 330.43      
14 A" 1212 1141 104.35      
15 A" 590 555 1.11      
16 A" 418 394 1.40      
17 A" 210 198 2.60      
18 A" 76 71 0.83      

Unscaled Zero Point Vibrational Energy (zpe) 8559.6 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 8058.0 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
0.12121 0.08108 0.06685

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 -0.609 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 -1.690 0.604 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.52281.33771.34371.34372.33662.33662.1688
C21.52282.36212.34532.34531.35681.35681.0892
F31.33772.36212.18152.18152.73572.73573.2982
F41.34372.34532.18152.18153.50522.73172.6340
F51.34372.34532.18152.18152.73173.50522.6340
F62.33661.35682.73573.50522.73172.21142.0082
F72.33661.35682.73572.73173.50522.21142.0082
H82.16881.08923.29822.63402.63402.00822.0082

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.333 C1 C2 F7 108.333
C1 C2 H8 111.182 C2 C1 F3 111.164
C2 C1 F4 109.649 C2 C1 F5 109.649
F3 C1 F4 108.894 F3 C1 F5 108.894
F4 C1 F5 108.542 F6 C2 F7 109.158
F6 C2 H8 109.893 F7 C2 H8 109.893
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability