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: B3PW91/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at B3PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-291.213550
Energy at 298.15K 
HF Energy-291.213550
Nuclear repulsion energy15.587542
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 B3PW91/aug-cc-pVTZ
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 2190 2113 7.01 295.58 0.06 0.11
2 A1 744 718 53.60 21.29 0.18 0.30
3 E 2231 2154 107.80 73.55 0.75 0.86
3 E 2231 2154 107.82 73.52 0.75 0.86
4 E 923 890 56.78 6.43 0.75 0.86
4 E 923 890 56.78 6.44 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4620.8 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 4459.5 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 B3PW91/aug-cc-pVTZ
ABC
4.68997 4.68997 2.77648

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.080
H2 0.000 1.417 -0.373
H3 1.227 -0.709 -0.373
H4 -1.227 -0.709 -0.373

Atom - Atom Distances (Å)
  Si1 H2 H3 H4
Si11.48761.48761.4876
H21.48762.45452.4545
H31.48762.45452.4545
H41.48762.45452.4545

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 111.176 H2 Si1 H4 111.176
H3 Si1 H4 111.176
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.408      
2 H -0.136      
3 H -0.136      
4 H -0.136      


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 0.016 0.016
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.788 0.000 0.000
y 0.000 -15.788 0.000
z 0.000 0.000 -16.294
Traceless
 xyz
x 0.253 0.000 0.000
y 0.000 0.253 0.000
z 0.000 0.000 -0.506
Polar
3z2-r2-1.012
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 5.232 0.000 0.000
y 0.000 5.232 0.000
z 0.000 0.000 5.186


<r2> (average value of r2) Å2
<r2> 16.496
(<r2>)1/2 4.062