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: PBEPBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-137.645575
Energy at 298.15K-137.648561
HF Energy-137.645575
Nuclear repulsion energy36.423275
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 PBEPBE/STO-3G
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 3107 2839 24.71 43.08 0.02 0.03
2 A1 1600 1461 2.37 6.13 0.75 0.85
3 A1 1166 1065 15.58 2.16 0.51 0.67
4 E 3241 2961 19.81 28.73 0.75 0.86
4 E 3241 2961 19.81 28.73 0.75 0.86
5 E 1618 1479 2.01 15.55 0.75 0.86
5 E 1618 1479 2.01 15.55 0.75 0.86
6 E 1197 1093 0.48 3.67 0.75 0.86
6 E 1197 1093 0.48 3.67 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8991.9 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 8215.0 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 PBEPBE/STO-3G
ABC
5.10026 0.81216 0.81216

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

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 0.774
H3 0.000 1.046 -1.048
H4 0.905 -0.523 -1.048
H5 -0.905 -0.523 -1.048

Atom - Atom Distances (Å)
  C1 F2 H3 H4 H5
C11.40991.12381.12381.1238
F21.40992.10052.10052.1005
H31.12382.10051.81101.8110
H41.12382.10051.81101.8110
H51.12382.10051.81101.8110

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 111.503 F2 C1 H4 111.503
F2 C1 H5 111.503 H3 C1 H4 107.365
H3 C1 H5 107.365 H4 C1 H5 107.365
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.136      
2 F -0.082      
3 H 0.072      
4 H 0.072      
5 H 0.072      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.814 0.814
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.831 0.000 0.000
y 0.000 -10.831 0.000
z 0.000 0.000 -11.040
Traceless
 xyz
x 0.104 0.000 0.000
y 0.000 0.104 0.000
z 0.000 0.000 -0.208
Polar
3z2-r2-0.417
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.871 0.000 0.000
y 0.000 0.871 0.000
z 0.000 0.000 1.197


<r2> (average value of r2) Å2
<r2> 21.199
(<r2>)1/2 4.604