return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/6-31G
 hartrees
Energy at 0K-575.306855
Energy at 298.15K 
HF Energy-575.038267
Nuclear repulsion energy350.826135
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 B2PLYP=FULLultrafine/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' 3208 3208 8.65      
2 A' 1448 1448 2.38      
3 A' 1324 1324 105.24      
4 A' 1184 1184 189.77      
5 A' 1090 1090 87.25      
6 A' 851 851 65.27      
7 A' 675 675 32.18      
8 A' 533 533 23.08      
9 A' 478 478 13.76      
10 A' 345 345 0.07      
11 A' 239 239 5.83      
12 A" 1401 1401 6.28      
13 A" 1204 1204 280.78      
14 A" 1119 1119 79.50      
15 A" 553 553 1.46      
16 A" 388 388 2.69      
17 A" 204 204 4.18      
18 A" 72 72 1.23      

Unscaled Zero Point Vibrational Energy (zpe) 8156.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8156.9 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 B2PLYP=FULLultrafine/6-31G
ABC
0.11420 0.07823 0.06421

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.119 -0.592 0.000
C2 -0.621 0.736 0.000
F3 1.487 -0.427 0.000
F4 -0.241 -1.323 1.123
F5 -0.241 -1.323 -1.123
F6 -0.241 1.455 -1.140
F7 -0.241 1.455 1.140
H8 -1.699 0.600 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.51961.37891.38701.38702.37042.37042.1734
C21.51962.40732.37512.37511.40071.40071.0868
F31.37892.40732.24752.24752.79762.79763.3477
F41.38702.37512.24752.24593.58272.77732.6612
F51.38702.37512.24752.24592.77733.58272.6612
F62.37041.40072.79763.58272.77732.28062.0391
F72.37041.40072.79762.77733.58272.28062.0391
H82.17341.08683.34772.66122.66122.03912.0391

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.457 C1 C2 F7 108.457
C1 C2 H8 111.927 C2 C1 F3 112.219
C2 C1 F4 109.512 C2 C1 F5 109.512
F3 C1 F4 108.693 F3 C1 F5 108.693
F4 C1 F5 108.119 F6 C2 F7 108.998
F6 C2 H8 109.474 F7 C2 H8 109.474
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability