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All results from a given calculation for SiH3F (monofluorosilane)

using model chemistry: HF/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 HF/3-21G
 hartrees
Energy at 0K-388.074062
Energy at 298.15K 
HF Energy-388.074062
Nuclear repulsion energy62.093536
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 HF/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 2353 2130 52.28 204.45 0.04 0.07
2 A1 1132 1025 361.36 24.14 0.65 0.78
3 A1 943 854 18.68 6.16 0.42 0.59
4 E 2338 2117 216.78 58.05 0.75 0.86
4 E 2338 2117 216.78 58.05 0.75 0.86
5 E 990 897 152.83 41.17 0.75 0.86
5 E 990 897 152.83 41.17 0.75 0.86
6 E 800 724 117.05 13.11 0.75 0.86
6 E 800 724 117.05 13.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6340.7 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 5742.1 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 HF/3-21G
ABC
2.86149 0.45632 0.45632

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.510
F2 0.000 0.000 -1.125
H3 0.000 1.396 0.996
H4 -1.209 -0.698 0.996
H5 1.209 -0.698 0.996

Atom - Atom Distances (Å)
  Si1 F2 H3 H4 H5
Si11.63531.47801.47801.4780
F21.63532.53922.53922.5392
H31.47802.53922.41772.4177
H41.47802.53922.41772.4177
H51.47802.53922.41772.4177

picture of monofluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 H3 109.190 F2 Si1 H4 109.190
F2 Si1 H5 109.190 H3 Si1 H4 109.751
H3 Si1 H5 109.751 H4 Si1 H5 109.751
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.226      
2 F -0.523      
3 H -0.234      
4 H -0.234      
5 H -0.234      


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 1.874 1.874
CHELPG 0.000 -0.001 1.895 1.895
AIM        
ESP -0.003 -0.006 1.884 1.884


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.342 0.000 0.000
y 0.000 -20.342 0.000
z 0.000 0.000 -22.244
Traceless
 xyz
x 0.951 0.000 0.000
y 0.000 0.951 0.000
z 0.000 0.000 -1.902
Polar
3z2-r2-3.804
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 2.789 0.000 0.000
y 0.000 2.789 0.000
z 0.000 0.000 2.269


<r2> (average value of r2) Å2
<r2> 36.960
(<r2>)1/2 6.079