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All results from a given calculation for SiH3Br (bromosilane)

using model chemistry: SVWN/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at SVWN/6-31+G**
 hartrees
Energy at 0K-2859.377420
Energy at 298.15K-2859.383451
HF Energy-2859.377420
Nuclear repulsion energy151.306729
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 SVWN/6-31+G**
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 2191 2158 61.03      
2 A1 888 875 287.17      
3 A1 439 433 39.81      
4 E 2215 2182 86.38      
4 E 2215 2182 86.38      
5 E 897 883 39.71      
5 E 897 883 39.71      
6 E 605 596 13.16      
6 E 605 596 13.16      

Unscaled Zero Point Vibrational Energy (zpe) 5475.4 cm-1
Scaled (by 0.9851) Zero Point Vibrational Energy (zpe) 5393.8 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 SVWN/6-31+G**
ABC
2.78858 0.14440 0.14440

See section I.F.4 to change rotational constant units
Geometric Data calculated at SVWN/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 -1.458
Br2 0.000 0.000 0.749
H3 0.000 1.414 -1.936
H4 1.225 -0.707 -1.936
H5 -1.225 -0.707 -1.936

Atom - Atom Distances (Å)
  Si1 Br2 H3 H4 H5
Si12.20761.49251.49251.4925
Br22.20763.03473.03473.0347
H31.49253.03472.44912.4491
H41.49253.03472.44912.4491
H51.49253.03472.44912.4491

picture of bromosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 Si1 H3 108.660 Br2 Si1 H4 108.660
Br2 Si1 H5 108.660 H3 Si1 H4 110.270
H3 Si1 H5 110.270 H4 Si1 H5 110.270
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at SVWN/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.387      
2 Br -0.306      
3 H -0.027      
4 H -0.027      
5 H -0.027      


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 -1.443 1.443
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.888 0.000 0.000
y 0.000 -33.888 0.000
z 0.000 0.000 -31.167
Traceless
 xyz
x -1.361 0.000 0.000
y 0.000 -1.361 0.000
z 0.000 0.000 2.722
Polar
3z2-r25.443
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 5.606 0.000 0.000
y 0.000 5.606 0.000
z 0.000 0.000 8.096


<r2> (average value of r2) Å2
<r2> 87.263
(<r2>)1/2 9.341