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 BeF2 (Beryllium fluoride)

using model chemistry: HSEh1PBE/aug-cc-pVTZ

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 HSEh1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-214.487116
Energy at 298.15K-214.486963
HF Energy-214.487116
Nuclear repulsion energy43.258373
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 HSEh1PBE/aug-cc-pVTZ
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 726 699 0.00      
2 Σu 1574 1514 390.54      
3 Πu 340 327 160.92      
3 Πu 340 327 160.92      

Unscaled Zero Point Vibrational Energy (zpe) 1490.4 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 1433.5 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 HSEh1PBE/aug-cc-pVTZ
B
0.23425

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pVTZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.000
F2 0.000 0.000 1.376
F3 0.000 0.000 -1.376

Atom - Atom Distances (Å)
  Be1 F2 F3
Be11.37621.3762
F21.37622.7524
F31.37622.7524

picture of Beryllium fluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Be1 F3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.738      
2 F -0.369      
3 F -0.369      


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 -12.865 0.000 0.000
y 0.000 -12.865 0.000
z 0.000 0.000 -21.242
Traceless
 xyz
x 4.188 0.000 0.000
y 0.000 4.188 0.000
z 0.000 0.000 -8.377
Polar
3z2-r2-16.754
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 1.844 0.000 0.000
y 0.000 1.844 0.000
z 0.000 0.000 2.371


<r2> (average value of r2) Å2
<r2> 43.870
(<r2>)1/2 6.623