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All results from a given calculation for SiH3Br (bromosilane)

using model chemistry: HF/6-311G*

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/6-311G*
 hartrees
Energy at 0K-2863.088744
Energy at 298.15K-2863.094947
HF Energy-2863.088744
Nuclear repulsion energy150.010271
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/6-311G*
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 2390 2161 74.06      
2 A1 1032 934 516.36      
3 A1 435 394 56.49      
4 E 2390 2161 136.02      
4 E 2390 2161 136.02      
5 E 1039 940 103.48      
5 E 1039 940 103.48      
6 E 688 623 31.91      
6 E 688 623 31.91      

Unscaled Zero Point Vibrational Energy (zpe) 6045.6 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 5467.7 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/6-311G*
ABC
2.87153 0.14115 0.14115

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 -1.480
Br2 0.000 0.000 0.758
H3 0.000 1.393 -1.937
H4 1.207 -0.697 -1.937
H5 -1.207 -0.697 -1.937

Atom - Atom Distances (Å)
  Si1 Br2 H3 H4 H5
Si12.23751.46661.46661.4666
Br22.23753.03403.03403.0340
H31.46663.03402.41352.4135
H41.46663.03402.41352.4135
H51.46663.03402.41352.4135

picture of bromosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 Si1 H3 108.178 Br2 Si1 H4 108.178
Br2 Si1 H5 108.178 H3 Si1 H4 110.733
H3 Si1 H5 110.733 H4 Si1 H5 110.733
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.646      
2 Br -0.349      
3 H -0.099      
4 H -0.099      
5 H -0.099      


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 -1.994 1.994
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.354 0.000 0.000
y 0.000 -34.354 0.000
z 0.000 0.000 -31.432
Traceless
 xyz
x -1.461 0.000 0.000
y 0.000 -1.461 0.000
z 0.000 0.000 2.923
Polar
3z2-r25.845
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 4.537 0.000 0.000
y 0.000 4.537 0.000
z 0.000 0.000 6.709


<r2> (average value of r2) Å2
<r2> 88.687
(<r2>)1/2 9.417