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All results from a given calculation for BeOH (beryllium monohydroxide)

using model chemistry: CISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C*V 2Σ

Conformer 1 (CS)

Jump to S1C2
Energy calculated at CISD/3-21G*
 hartrees
Energy at 0K-89.739202
Energy at 298.15K 
HF Energy-89.604760
Nuclear repulsion energy17.533175
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 CISD/3-21G*
Rotational Constants (cm-1) from geometry optimized at CISD/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at CISD/3-21G*
 hartrees
Energy at 0K-89.740779
Energy at 298.15K-89.740453
HF Energy-89.606283
Nuclear repulsion energy17.396931
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 CISD/3-21G*
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 3907 3651 171.54      
2 Σ 1422 1329 71.39      
3 Π 260 243 233.95      
3 Π 260 243 233.95      

Unscaled Zero Point Vibrational Energy (zpe) 2924.3 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 2732.5 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 CISD/3-21G*
B
1.26182

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.356
Be2 0.000 0.000 -1.042
H3 0.000 0.000 1.320

Atom - Atom Distances (Å)
  O1 Be2 H3
O11.39840.9640
Be21.39842.3624
H30.96402.3624

picture of beryllium monohydroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Be2 O1 H3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability