return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
1 2 no C*V 2Σ

Conformer 1 (CS)

Jump to S1C2
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-17.444704
Energy at 298.15K-17.444547
HF Energy-17.309046
Nuclear repulsion energy8.313686
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 MP2/CEP-121G
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 4014 3917 187.36      
2 Σ 1257 1227 120.76      
3 Π 329 321 293.48      
3 Π 329 321 293.48      

Unscaled Zero Point Vibrational Energy (zpe) 2964.3 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 2893.1 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 MP2/CEP-121G
B
1.26818

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.204
Be2 0.000 0.000 -1.192
H3 0.000 0.000 1.162

Atom - Atom Distances (Å)
  O1 Be2 H3
O11.39540.9583
Be21.39542.3537
H30.95832.3537

picture of beryllium monohydroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Be2 O1 H3 180.000
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-17.444704
Energy at 298.15K-17.444547
HF Energy-17.309046
Nuclear repulsion energy8.313686
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 MP2/CEP-121G
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 4014 3917 187.36      
2 Σ 1257 1227 120.76      
3 Π 329 321 293.48      
3 Π 329 321 293.48      

Unscaled Zero Point Vibrational Energy (zpe) 2964.3 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 2893.1 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 MP2/CEP-121G
B
1.26818

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

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 -1.040
H3 0.000 0.000 1.314

Atom - Atom Distances (Å)
  O1 Be2 H3
O11.39540.9583
Be21.39542.3537
H30.95832.3537

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