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 BeO (beryllium oxide)

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-89.793149
Energy at 298.15K-89.792229
HF Energy-89.793149
Nuclear repulsion energy12.464628
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 PBEPBE/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 1437 1428 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 718.3 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 714.1 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 PBEPBE/cc-pVDZ
B
1.58454

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 -0.906
O2 0.000 0.000 0.453

Atom - Atom Distances (Å)
  Be1 O2
Be11.3585
O21.3585

picture of beryllium oxide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.130      
2 O -0.130      


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 -5.228 5.228
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.781 0.000 0.000
y 0.000 -10.781 0.000
z 0.000 0.000 -4.510
Traceless
 xyz
x -3.136 0.000 0.000
y 0.000 -3.136 0.000
z 0.000 0.000 6.271
Polar
3z2-r212.543
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 4.156 0.000 0.000
y 0.000 4.156 0.000
z 0.000 0.000 4.176


<r2> (average value of r2) Å2
<r2> 10.350
(<r2>)1/2 3.217