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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: CISD/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 CISD/6-31G
 hartrees
Energy at 0K-573.991077
Energy at 298.15K-573.994450
HF Energy-573.319783
Nuclear repulsion energy352.742729
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 CISD/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' 3288 3084 6.07      
2 A' 1513 1419 1.96      
3 A' 1389 1303 130.27      
4 A' 1259 1180 193.16      
5 A' 1143 1072 101.82      
6 A' 888 833 70.22      
7 A' 706 662 41.24      
8 A' 556 521 27.73      
9 A' 500 468 18.84      
10 A' 360 337 0.16      
11 A' 249 233 7.07      
12 A" 1456 1365 9.34      
13 A" 1290 1209 288.01      
14 A" 1195 1121 93.74      
15 A" 577 541 2.53      
16 A" 407 382 3.71      
17 A" 213 199 4.95      
18 A" 79 74 1.55      

Unscaled Zero Point Vibrational Energy (zpe) 8532.9 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 8002.2 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 CISD/6-31G
ABC
0.11574 0.07890 0.06485

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.118 -0.592 0.000
C2 -0.620 0.735 0.000
F3 1.478 -0.426 0.000
F4 -0.239 -1.317 1.115
F5 -0.239 -1.317 -1.115
F6 -0.239 1.449 -1.132
F7 -0.239 1.449 1.132
H8 -1.694 0.601 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.51841.37001.37721.37722.36102.36102.1694
C21.51842.39812.36632.36631.39161.39161.0825
F31.37002.39812.23272.23272.78352.78353.3343
F41.37722.36632.23272.23003.56382.76592.6529
F51.37722.36632.23272.23002.76593.56382.6529
F62.36101.39162.78353.56382.76592.26482.0294
F72.36101.39162.78352.76593.56382.26482.0294
H82.16941.08253.33432.65292.65292.02942.0294

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.371 C1 C2 F7 108.371
C1 C2 H8 111.948 C2 C1 F3 112.150
C2 C1 F4 109.517 C2 C1 F5 109.517
F3 C1 F4 108.725 F3 C1 F5 108.725
F4 C1 F5 108.118 F6 C2 F7 108.920
F6 C2 H8 109.585 F7 C2 H8 109.585
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability