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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: B2PLYP/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 B2PLYP/3-21G
 hartrees
Energy at 0K-586.210266
Energy at 298.15K 
HF Energy-586.075531
Nuclear repulsion energy183.498178
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 B2PLYP/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 2435 2435 116.30 88.89 0.18 0.31
2 A1 861 861 53.71 7.95 0.00 0.00
3 A1 403 403 85.68 1.72 0.75 0.86
4 E 1061 1061 198.74 1.15 0.75 0.86
4 E 1061 1061 198.72 1.15 0.75 0.86
5 E 891 891 37.00 16.45 0.75 0.86
5 E 891 891 37.00 16.45 0.75 0.86
6 E 300 300 16.25 1.06 0.75 0.86
6 E 300 300 16.26 1.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4101.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4101.2 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 B2PLYP/3-21G
ABC
0.22556 0.22556 0.13116

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.358
H2 0.000 0.000 1.819
F3 0.000 1.502 -0.253
F4 1.300 -0.751 -0.253
F5 -1.300 -0.751 -0.253

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.46101.62091.62091.6209
H21.46102.55842.55842.5584
F31.62092.55842.60102.6010
F41.62092.55842.60102.6010
F51.62092.55842.60102.6010

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 112.117 H2 Si1 F4 112.117
H2 Si1 F5 112.117 F3 Si1 F4 106.701
F3 Si1 F5 106.701 F4 Si1 F5 106.701
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.442      
2 H -0.211      
3 F -0.410      
4 F -0.410      
5 F -0.410      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.223 0.000 0.000
y 0.000 -30.223 0.000
z 0.000 0.000 -25.992
Traceless
 xyz
x -2.116 0.000 0.000
y 0.000 -2.116 0.000
z 0.000 0.000 4.231
Polar
3z2-r28.462
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 2.190 0.000 0.000
y 0.000 2.190 0.000
z 0.000 0.000 2.385


<r2> (average value of r2) Å2
<r2> 85.705
(<r2>)1/2 9.258