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All results from a given calculation for SiH3Br (bromosilane)

using model chemistry: B1B95/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/cc-pVTZ
 hartrees
Energy at 0K-2865.914436
Energy at 298.15K-2865.920527
HF Energy-2865.914436
Nuclear repulsion energy150.837608
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 B1B95/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 2256 2159 59.94      
2 A1 924 885 296.27      
3 A1 430 411 41.66      
4 E 2273 2175 89.51      
4 E 2273 2175 89.53      
5 E 945 904 51.29      
5 E 945 904 51.28      
6 E 628 601 15.52      
6 E 628 601 15.51      

Unscaled Zero Point Vibrational Energy (zpe) 5650.3 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 5407.9 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 B1B95/cc-pVTZ
ABC
2.83788 0.14310 0.14310

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 -1.468
Br2 0.000 0.000 0.753
H3 0.000 1.402 -1.933
H4 1.214 -0.701 -1.933
H5 -1.214 -0.701 -1.933

Atom - Atom Distances (Å)
  Si1 Br2 H3 H4 H5
Si12.22021.47691.47691.4769
Br22.22023.02923.02923.0292
H31.47693.02922.42782.4278
H41.47693.02922.42782.4278
H51.47693.02922.42782.4278

picture of bromosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 Si1 H3 108.361 Br2 Si1 H4 108.361
Br2 Si1 H5 108.361 H3 Si1 H4 110.558
H3 Si1 H5 110.558 H4 Si1 H5 110.558
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.182      
2 Br -0.199      
3 H 0.006      
4 H 0.006      
5 H 0.006      


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 -1.320 1.320
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.635 0.000 0.000
y 0.000 -33.635 0.000
z 0.000 0.000 -31.033
Traceless
 xyz
x -1.301 0.000 0.000
y 0.000 -1.301 0.000
z 0.000 0.000 2.603
Polar
3z2-r25.206
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 5.746 0.000 0.000
y 0.000 5.745 0.000
z 0.000 0.000 8.449


<r2> (average value of r2) Å2
<r2> 87.544
(<r2>)1/2 9.356