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All results from a given calculation for SiH3F (monofluorosilane)

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-388.813186
Energy at 298.15K 
HF Energy-388.813186
Nuclear repulsion energy60.698400
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/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 2155 2135 48.61 192.62 0.03 0.06
2 A1 1027 1017 179.32 23.13 0.62 0.76
3 A1 842 834 11.65 7.07 0.35 0.52
4 E 2163 2143 167.37 62.38 0.75 0.86
4 E 2163 2143 167.41 62.37 0.75 0.86
5 E 853 845 60.96 39.14 0.75 0.86
5 E 853 845 60.96 39.14 0.75 0.86
6 E 737 730 73.06 10.49 0.75 0.86
6 E 737 730 73.06 10.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5763.7 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 5711.2 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/3-21G
ABC
2.77890 0.43468 0.43468

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.520
F2 0.000 0.000 -1.154
H3 0.000 1.416 1.037
H4 -1.227 -0.708 1.037
H5 1.227 -0.708 1.037

Atom - Atom Distances (Å)
  Si1 F2 H3 H4 H5
Si11.67371.50811.50811.5081
F21.67372.60922.60922.6092
H31.50812.60922.45342.4534
H41.50812.60922.45342.4534
H51.50812.60922.45342.4534

picture of monofluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 H3 110.071 F2 Si1 H4 110.071
F2 Si1 H5 110.071 H3 Si1 H4 108.865
H3 Si1 H5 108.865 H4 Si1 H5 108.865
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.696      
2 F -0.331      
3 H -0.122      
4 H -0.122      
5 H -0.122      


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 1.254 1.254
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.192 0.000 0.000
y 0.000 -20.192 0.000
z 0.000 0.000 -21.355
Traceless
 xyz
x 0.581 0.000 0.000
y 0.000 0.581 0.000
z 0.000 0.000 -1.163
Polar
3z2-r2-2.326
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 3.103 0.000 0.000
y 0.000 3.103 0.000
z 0.000 0.000 2.941


<r2> (average value of r2) Å2
<r2> 37.867
(<r2>)1/2 6.154