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All results from a given calculation for BeH2 (beryllium dihydride)

using model chemistry: B3LYP/cc-pVQZ

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 B3LYP/cc-pVQZ
 hartrees
Energy at 0K-15.925607
Energy at 298.15K-15.926009
HF Energy-15.925607
Nuclear repulsion energy3.395863
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 B3LYP/cc-pVQZ
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 2049 1985 0.00      
2 Σu 2261 2190 242.58      
3 Πu 727 704 332.98      
3 Πu 727 704 332.98      

Unscaled Zero Point Vibrational Energy (zpe) 2881.8 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 2791.8 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 B3LYP/cc-pVQZ
B
4.76696

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.000
H2 0.000 0.000 1.325
H3 0.000 0.000 -1.325

Atom - Atom Distances (Å)
  Be1 H2 H3
Be11.32461.3246
H21.32462.6491
H31.32462.6491

picture of beryllium dihydride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Be1 H3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.377      
2 H -0.188      
3 H -0.188      


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 -6.678 0.000 0.000
y 0.000 -6.678 0.000
z 0.000 0.000 -11.913
Traceless
 xyz
x 2.617 0.000 0.000
y 0.000 2.617 0.000
z 0.000 0.000 -5.235
Polar
3z2-r2-10.470
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 2.732 0.000 0.000
y 0.000 2.732 0.000
z 0.000 0.000 3.047


<r2> (average value of r2) Å2
<r2> 8.770
(<r2>)1/2 2.961