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

using model chemistry: PBEPBE/6-311+G(3df,2p)

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 PBEPBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-15.862828
Energy at 298.15K-15.863199
HF Energy-15.862828
Nuclear repulsion energy3.361050
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/6-311+G(3df,2p)
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 1999 1983 0.00      
2 Σu 2212 2194 218.39      
3 Πu 691 685 304.71      
3 Πu 691 685 304.71      

Unscaled Zero Point Vibrational Energy (zpe) 2796.6 cm-1
Scaled (by 0.9918) Zero Point Vibrational Energy (zpe) 2773.7 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/6-311+G(3df,2p)
B
4.66972

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311+G(3df,2p)

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 1.338
H3 0.000 0.000 -1.338

Atom - Atom Distances (Å)
  Be1 H2 H3
Be11.33831.3383
H21.33832.6765
H31.33832.6765

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 PBEPBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.124      
2 H -0.062      
3 H -0.062      


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 -6.806 0.000 0.000
y 0.000 -6.806 0.000
z 0.000 0.000 -11.818
Traceless
 xyz
x 2.506 0.000 0.000
y 0.000 2.506 0.000
z 0.000 0.000 -5.012
Polar
3z2-r2-10.024
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 3.162 0.000 0.000
y 0.000 3.162 0.000
z 0.000 0.000 3.227


<r2> (average value of r2) Å2
<r2> 8.876
(<r2>)1/2 2.979