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

using model chemistry: CBS-Q

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 CBS-Q
 hartrees
Energy at 0K-15.841042
Energy at 298.15K-15.837508
HF Energy-15.765092
Nuclear repulsion energy3.364855
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 CBS-Q
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 2091 2091 0.00      
2 Σu 2297 2297 270.77      
3 Πu 759 759 354.28      
3 Πu 759 759 354.28      

Unscaled Zero Point Vibrational Energy (zpe) 2952.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2952.9 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 CBS-Q
B
4.66257

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

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 1.337
H3 0.000 0.000 -1.337

Atom - Atom Distances (Å)
  Be1 H2 H3
Be11.33681.3368
H21.33682.6735
H31.33682.6735

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

Electronic state

Charges, Dipole, Quadrupole and Polarizability