return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for SiH3 (Silyl radical)

using model chemistry: BLYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-291.227184
Energy at 298.15K 
HF Energy-291.227184
Nuclear repulsion energy15.511047
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 BLYP/6-311G**
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 2132 2124 4.07 297.61 0.08 0.15
2 A1 734 731 67.46 4.81 0.13 0.23
3 E 2179 2170 125.34 102.92 0.75 0.86
3 E 2179 2170 125.37 102.93 0.75 0.86
4 E 912 908 59.80 37.59 0.75 0.86
4 E 912 908 59.81 37.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4523.3 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 4505.7 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 BLYP/6-311G**
ABC
4.64069 4.64069 2.75195

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.081
H2 0.000 1.423 -0.376
H3 1.233 -0.712 -0.376
H4 -1.233 -0.712 -0.376

Atom - Atom Distances (Å)
  Si1 H2 H3 H4
Si11.49491.49491.4949
H21.49492.46542.4654
H31.49492.46542.4654
H41.49492.46542.4654

picture of Silyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 H3 111.092 H2 Si1 H4 111.092
H3 Si1 H4 111.092
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.302      
2 H -0.101      
3 H -0.101      
4 H -0.101      


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 0.176 0.176
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.129 0.000 0.000
y 0.000 -16.129 0.000
z 0.000 0.000 -16.333
Traceless
 xyz
x 0.102 0.000 0.000
y 0.000 0.102 0.000
z 0.000 0.000 -0.204
Polar
3z2-r2-0.408
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 4.340 0.000 0.000
y 0.000 4.341 0.000
z 0.000 0.000 2.780


<r2> (average value of r2) Å2
<r2> 16.710
(<r2>)1/2 4.088