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All results from a given calculation for BeBr2 (Beryllium bromide)

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1ΣG
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-5138.362105
Energy at 298.15K 
HF Energy-5138.362105
Nuclear repulsion energy242.375699
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 B3PW91/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 239 229 0.00      
2 Σu 1029 990 310.87      
3 Πu 181 174 24.85      
3 Πu 181 174 24.85      

Unscaled Zero Point Vibrational Energy (zpe) 815.4 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 783.8 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 B3PW91/3-21G
B
0.02813

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.000
Br2 0.000 0.000 1.949
Br3 0.000 0.000 -1.949

Atom - Atom Distances (Å)
  Be1 Br2 Br3
Be11.94861.9486
Br21.94863.8972
Br31.94863.8972

picture of Beryllium bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 Be1 Br3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.421      
2 Br -0.211      
3 Br -0.211      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.363 0.000 0.000
y 0.000 -41.363 0.000
z 0.000 0.000 -46.493
Traceless
 xyz
x 2.565 0.000 0.000
y 0.000 2.565 0.000
z 0.000 0.000 -5.130
Polar
3z2-r2-10.261
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 2.934 0.000 0.000
y 0.000 2.934 0.000
z 0.000 0.000 9.669


<r2> (average value of r2) Å2
<r2> 292.693
(<r2>)1/2 17.108