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

using model chemistry: QCISD/3-21G

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/3-21G
 hartrees
Energy at 0K-138.508840
Energy at 298.15K-138.511865
HF Energy-138.280657
Nuclear repulsion energy36.452941
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/3-21G
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 3029 2936 18.29      
2 A1 1563 1515 7.59      
3 A1 1055 1023 38.30      
4 E 3087 2992 48.29      
4 E 3087 2992 48.29      
5 E 1581 1532 1.12      
5 E 1581 1532 1.12      
6 E 1196 1159 0.37      
6 E 1196 1159 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 8687.6 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 8420.0 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/3-21G
ABC
5.22782 0.80635 0.80635

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.652
F2 0.000 0.000 0.776
H3 0.000 1.033 -1.025
H4 0.894 -0.516 -1.025
H5 -0.894 -0.516 -1.025

Atom - Atom Distances (Å)
  C1 F2 H3 H4 H5
C11.42831.09781.09781.0978
F21.42832.07592.07592.0759
H31.09782.07591.78871.7887
H41.09782.07591.78871.7887
H51.09782.07591.78871.7887

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 109.832 F2 C1 H4 109.832
F2 C1 H5 109.832 H3 C1 H4 109.108
H3 C1 H5 109.108 H4 C1 H5 109.108
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability