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All results from a given calculation for SiH3F (monofluorosilane)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-389.059513
Energy at 298.15K 
HF Energy-389.059513
Nuclear repulsion energy61.330790
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 mPW1PW91/3-21G
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 2238 2137 49.53 193.94 0.03 0.06
2 A1 1060 1012 226.11 23.12 0.62 0.77
3 A1 880 840 12.93 6.91 0.39 0.56
4 E 2242 2140 178.16 59.85 0.75 0.86
4 E 2242 2140 178.18 59.85 0.75 0.86
5 E 895 854 82.79 39.95 0.75 0.86
5 E 895 854 82.80 39.95 0.75 0.86
6 E 757 723 85.19 11.34 0.75 0.86
6 E 757 723 85.19 11.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5982.4 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 5710.8 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 mPW1PW91/3-21G
ABC
2.82589 0.44410 0.44410

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.515
F2 0.000 0.000 -1.141
H3 0.000 1.405 1.021
H4 -1.216 -0.702 1.021
H5 1.216 -0.702 1.021

Atom - Atom Distances (Å)
  Si1 F2 H3 H4 H5
Si11.65661.49291.49291.4929
F21.65662.57842.57842.5784
H31.49292.57842.43292.4329
H41.49292.57842.43292.4329
H51.49292.57842.43292.4329

picture of monofluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 H3 109.799 F2 Si1 H4 109.799
F2 Si1 H5 109.799 H3 Si1 H4 109.142
H3 Si1 H5 109.142 H4 Si1 H5 109.142
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.856      
2 F -0.395      
3 H -0.154      
4 H -0.154      
5 H -0.154      


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 1.494 1.494
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.050 0.000 0.000
y 0.000 -20.050 0.000
z 0.000 0.000 -21.539
Traceless
 xyz
x 0.745 0.000 0.000
y 0.000 0.745 0.000
z 0.000 0.000 -1.490
Polar
3z2-r2-2.980
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 2.976 0.000 0.000
y 0.000 2.977 0.000
z 0.000 0.000 2.706


<r2> (average value of r2) Å2
<r2> 37.319
(<r2>)1/2 6.109