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All results from a given calculation for SiH3Br (bromosilane)

using model chemistry: HF/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/cc-pVDZ
 hartrees
Energy at 0K-2863.102522
Energy at 298.15K-2863.108708
HF Energy-2863.102522
Nuclear repulsion energy149.084197
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 HF/cc-pVDZ
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 2347 2131 69.73      
2 A1 1008 915 411.34      
3 A1 434 394 55.61      
4 E 2353 2136 124.98      
4 E 2353 2136 124.98      
5 E 1023 929 84.04      
5 E 1023 929 84.04      
6 E 675 613 24.45      
6 E 675 613 24.45      

Unscaled Zero Point Vibrational Energy (zpe) 5945.4 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 5398.4 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 HF/cc-pVDZ
ABC
2.82090 0.13949 0.13949

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 -1.489
Br2 0.000 0.000 0.762
H3 0.000 1.406 -1.946
H4 1.218 -0.703 -1.946
H5 -1.218 -0.703 -1.946

Atom - Atom Distances (Å)
  Si1 Br2 H3 H4 H5
Si12.25101.47841.47841.4784
Br22.25103.05153.05153.0515
H31.47843.05152.43512.4351
H41.47843.05152.43512.4351
H51.47843.05152.43512.4351

picture of bromosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 Si1 H3 108.020 Br2 Si1 H4 108.020
Br2 Si1 H5 108.020 H3 Si1 H4 110.882
H3 Si1 H5 110.882 H4 Si1 H5 110.882
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.569      
2 Br -0.302      
3 H -0.089      
4 H -0.089      
5 H -0.089      


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 -1.852 1.852
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.158 0.000 0.000
y 0.000 -34.158 0.000
z 0.000 0.000 -31.220
Traceless
 xyz
x -1.469 0.000 0.000
y 0.000 -1.469 0.000
z 0.000 0.000 2.939
Polar
3z2-r25.878
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 4.679 0.000 0.000
y 0.000 4.679 0.000
z 0.000 0.000 7.076


<r2> (average value of r2) Å2
<r2> 89.381
(<r2>)1/2 9.454