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All results from a given calculation for CH3F (Methyl fluoride)

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 C3V 1A1
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-139.355176
Energy at 298.15K-139.358204
HF Energy-139.033606
Nuclear repulsion energy37.138811
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 A1 3071 2925 26.62      
2 A1 1541 1467 8.57      
3 A1 1102 1050 87.47      
4 E 3158 3007 45.13      
4 E 3158 3007 45.13      
5 E 1547 1473 1.31      
5 E 1547 1473 1.31      
6 E 1216 1158 1.00      
6 E 1216 1158 1.00      

Unscaled Zero Point Vibrational Energy (zpe) 8777.7 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 8359.0 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
5.20168 0.84680 0.84680

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.636
F2 0.000 0.000 0.756
H3 0.000 1.035 -0.994
H4 0.897 -0.518 -0.994
H5 -0.897 -0.518 -0.994

Atom - Atom Distances (Å)
  C1 F2 H3 H4 H5
C11.39171.09551.09551.0955
F21.39172.03332.03332.0333
H31.09552.03331.79321.7932
H41.09552.03331.79321.7932
H51.09552.03331.79321.7932

picture of Methyl fluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 H3 109.086 F2 C1 H4 109.086
F2 C1 H5 109.086 H3 C1 H4 109.853
H3 C1 H5 109.853 H4 C1 H5 109.853
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability