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

using model chemistry: QCISD/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 QCISD/3-21G*
 hartrees
Energy at 0K-89.743864
Energy at 298.15K 
HF Energy-89.602366
Nuclear repulsion energy17.560132
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 QCISD/3-21G*
Rotational Constants (cm-1) from geometry optimized at QCISD/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-89.747916
Energy at 298.15K-89.747561
HF Energy-89.606111
Nuclear repulsion energy17.351741
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 QCISD/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 3856 3706 179.18      
2 Σ 1407 1352 56.40      
3 Π 249 239 227.36      
3 Π 249 239 227.36      

Unscaled Zero Point Vibrational Energy (zpe) 2880.4 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 2768.4 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 QCISD/3-21G*
B
1.25573

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.357
Be2 0.000 0.000 -1.045
H3 0.000 0.000 1.324

Atom - Atom Distances (Å)
  O1 Be2 H3
O11.40160.9672
Be21.40162.3689
H30.96722.3689

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