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 CH3F (Methyl fluoride)

using model chemistry: CCSD/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCSD/cc-pVQZ
 hartrees
Energy at 0K-139.587878
Energy at 298.15K 
HF Energy-139.105581
Nuclear repulsion energy37.287230
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 CCSD/cc-pVQZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3044 2894 27.88      
2 A1 1515 1440 1.85      
3 A1 1071 1018 102.97      
4 E 3131 2976 28.99      
4 E 3131 2976 28.99      
5 E 1526 1450 3.61      
5 E 1526 1450 3.61      
6 E 1221 1161 1.58      
6 E 1221 1161 1.58      

Unscaled Zero Point Vibrational Energy (zpe) 8692.9 cm-1
Scaled (by 0.9505) Zero Point Vibrational Energy (zpe) 8262.6 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 CCSD/cc-pVQZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVQZ

Point Group is C3v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability