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All results from a given calculation for SiH3Br (bromosilane)

using model chemistry: wB97X-D/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at wB97X-D/SDD
 hartrees
Energy at 0K-304.647191
Energy at 298.15K-304.653200
HF Energy-304.647191
Nuclear repulsion energy 
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 wB97X-D/SDD
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 2292 2292 56.45      
2 A1 916 916 344.28      
3 A1 380 380 32.83      
4 E 2314 2314 90.86      
4 E 2314 2314 90.87      
5 E 938 938 63.91      
5 E 938 938 63.91      
6 E 619 619 19.56      
6 E 619 619 19.53      

Unscaled Zero Point Vibrational Energy (zpe) 5663.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5663.8 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 wB97X-D/SDD
ABC
2.79893 0.13133 0.13133

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/SDD

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 -1.538
Br2 0.000 0.000 0.786
H3 0.000 1.411 -1.987
H4 1.222 -0.706 -1.987
H5 -1.222 -0.706 -1.987

Atom - Atom Distances (Å)
  Si1 Br2 H3 H4 H5
Si12.32421.48101.48101.4810
Br22.32423.11143.11143.1114
H31.48103.11142.44462.4446
H41.48103.11142.44462.4446
H51.48103.11142.44462.4446

picture of bromosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 Si1 H3 107.637 Br2 Si1 H4 107.637
Br2 Si1 H5 107.637 H3 Si1 H4 111.241
H3 Si1 H5 111.241 H4 Si1 H5 111.241
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.461      
2 Br -0.257      
3 H -0.068      
4 H -0.068      
5 H -0.068      


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 -2.622 2.622
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.012 0.000 0.000
y 0.000 -31.012 0.000
z 0.000 0.000 -27.959
Traceless
 xyz
x -1.526 0.000 0.000
y 0.000 -1.526 0.000
z 0.000 0.000 3.053
Polar
3z2-r26.105
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 3.583 0.000 0.000
y 0.000 3.582 0.000
z 0.000 0.000 7.947


<r2> (average value of r2) Å2
<r2> 74.014
(<r2>)1/2 8.603