return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: BLYP/STO-3G

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 BLYP/STO-3G
 hartrees
Energy at 0K-5106.489379
Energy at 298.15K 
HF Energy-5106.489379
Nuclear repulsion energy250.951444
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 BLYP/STO-3G
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 282 261 0.00 4.04 0.24 0.39
2 Σu 1232 1140 221.56 0.00 0.00 0.00
3 Πu 228 211 6.42 0.00 0.00 0.00
3 Πu 228 211 6.42 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 985.2 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 911.6 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 BLYP/STO-3G
B
0.03015

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

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 1.882
Br3 0.000 0.000 -1.882

Atom - Atom Distances (Å)
  Be1 Br2 Br3
Be11.88201.8820
Br21.88203.7640
Br31.88203.7640

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 BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be -0.102      
2 Br 0.051      
3 Br 0.051      


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 -37.552 0.000 0.000
y 0.000 -37.552 0.000
z 0.000 0.000 -38.603
Traceless
 xyz
x 0.525 0.000 0.000
y 0.000 0.525 0.000
z 0.000 0.000 -1.051
Polar
3z2-r2-2.101
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 1.081 0.000 0.000
y 0.000 1.081 0.000
z 0.000 0.000 7.141


<r2> (average value of r2) Å2
<r2> 271.608
(<r2>)1/2 16.481