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

using model chemistry: mPW1PW91/6-31G**

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 mPW1PW91/6-31G**
 hartrees
Energy at 0K-5158.631435
Energy at 298.15K 
HF Energy-5158.631435
Nuclear repulsion energy246.921023
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 mPW1PW91/6-31G**
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 254 241 0.00 3.52 0.18 0.30
2 Σu 1093 1040 395.34 0.00 0.00 0.00
3 Πu 355 337 22.47 0.00 0.00 0.00
3 Πu 355 337 22.47 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 1027.8 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 977.9 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 mPW1PW91/6-31G**
B
0.02919

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

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 1.913
Br3 0.000 0.000 -1.913

Atom - Atom Distances (Å)
  Be1 Br2 Br3
Be11.91271.9127
Br21.91273.8254
Br31.91273.8254

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 mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.204      
2 Br -0.102      
3 Br -0.102      


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 -40.917 0.000 0.000
y 0.000 -40.917 0.000
z 0.000 0.000 -43.460
Traceless
 xyz
x 1.271 0.000 0.000
y 0.000 1.271 0.000
z 0.000 0.000 -2.543
Polar
3z2-r2-5.085
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 4.617 0.000 0.000
y 0.000 4.617 0.000
z 0.000 0.000 9.652


<r2> (average value of r2) Å2
<r2> 282.180
(<r2>)1/2 16.798