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All results from a given calculation for SiH3I (Silyl Iodide)

using model chemistry: PBEPBE/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-588.869744
Energy at 298.15K 
HF Energy-588.869744
Nuclear repulsion energy103.139996
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/Def2TZVPP
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 2171 2145 59.51 308.47 0.00 0.00
2 A1 866 855 331.95 5.19 0.47 0.64
3 A1 351 346 23.03 14.76 0.21 0.34
4 E 2192 2166 66.42 100.19 0.75 0.86
4 E 2192 2166 66.44 100.18 0.75 0.86
5 E 906 895 39.86 12.42 0.75 0.86
5 E 906 895 39.87 12.42 0.75 0.86
6 E 564 557 6.24 5.10 0.75 0.86
6 E 564 557 6.24 5.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5355.8 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 5291.0 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/Def2TZVPP
ABC
2.79393 0.10552 0.10552

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 -1.840
I2 0.000 0.000 0.617
H3 0.000 1.413 -2.315
H4 1.223 -0.706 -2.315
H5 -1.223 -0.706 -2.315

Atom - Atom Distances (Å)
  Si1 I2 H3 H4 H5
Si12.45691.49041.49041.4904
I22.45693.25463.25463.2546
H31.49043.25462.44682.4468
H41.49043.25462.44682.4468
H51.49043.25462.44682.4468

picture of Silyl Iodide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 Si1 H3 108.588 I2 Si1 H4 108.588
I2 Si1 H5 108.588 H3 Si1 H4 110.340
H3 Si1 H5 110.340 H4 Si1 H5 110.340
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.218      
2 I -0.135      
3 H -0.028      
4 H -0.028      
5 H -0.028      


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 -1.051 1.051
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.698 0.000 0.000
y 0.000 -42.698 0.000
z 0.000 0.000 -38.438
Traceless
 xyz
x -2.130 0.000 0.000
y 0.000 -2.130 0.000
z 0.000 0.000 4.260
Polar
3z2-r28.520
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 7.412 0.000 0.000
y 0.000 7.413 0.000
z 0.000 0.000 11.775


<r2> (average value of r2) Å2
<r2> 104.756
(<r2>)1/2 10.235