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/STO-3G

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-88.941846
Energy at 298.15K-88.941767
HF Energy-88.874236
Nuclear repulsion energy18.168833
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/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 4229 3687 111.58 69.78 0.38 0.55
2 A' 1710 1491 19.14 25.85 0.15 0.26
3 A' 498 434 86.20 0.74 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3218.0 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 2805.7 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 MP2/STO-3G
B
1.41496

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 -0.327 0.000
Be2 0.000 0.981 0.000
H3 -0.001 -1.312 0.000

Atom - Atom Distances (Å)
  O1 Be2 H3
O11.30780.9851
Be21.30782.2929
H30.98512.2929

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 179.966
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-88.941846
Energy at 298.15K-88.941934
HF Energy-88.874241
Nuclear repulsion energy18.169451
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/STO-3G
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 4230 3688 111.60      
2 Σ 1710 1491 19.14      
3 Π 497 433 86.21      
3 Π 497 433 86.21      

Unscaled Zero Point Vibrational Energy (zpe) 3466.2 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 3022.1 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/STO-3G
B
1.41503

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.327
Be2 0.000 0.000 -0.981
H3 0.000 0.000 1.312

Atom - Atom Distances (Å)
  O1 Be2 H3
O11.30780.9850
Be21.30782.2928
H30.98502.2928

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