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

using model chemistry: CISD/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 CISD/3-21G*
 hartrees
Energy at 0K-138.495310
Energy at 298.15K-138.498341
HF Energy-138.281144
Nuclear repulsion energy36.594150
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/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 3085 2883 16.71      
2 A1 1584 1480 7.23      
3 A1 1077 1007 42.88      
4 E 3143 2937 47.29      
4 E 3143 2937 47.29      
5 E 1603 1498 1.36      
5 E 1603 1498 1.36      
6 E 1213 1133 0.44      
6 E 1213 1133 0.44      

Unscaled Zero Point Vibrational Energy (zpe) 8832.4 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 8253.0 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 CISD/3-21G*
ABC
5.26455 0.81271 0.81271

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.650
F2 0.000 0.000 0.773
H3 0.000 1.029 -1.020
H4 0.891 -0.515 -1.020
H5 -0.891 -0.515 -1.020

Atom - Atom Distances (Å)
  C1 F2 H3 H4 H5
C11.42301.09351.09351.0935
F21.42302.06712.06712.0671
H31.09352.06711.78251.7825
H41.09352.06711.78251.7825
H51.09352.06711.78251.7825

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 109.762 F2 C1 H4 109.762
F2 C1 H5 109.762 H3 C1 H4 109.178
H3 C1 H5 109.178 H4 C1 H5 109.178
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability