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 Be(OH)2 (Beryllium hydroxide)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no C2V 1A1
1 2 yes C2 1A

Conformer 1 (C2V)

Jump to S1C2
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-166.121417
Energy at 298.15K 
HF Energy-165.683911
Nuclear repulsion energy48.927443
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 MP2/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 4020 3820 46.04      
2 A1 756 718 10.03      
3 A1 587 558 178.28      
4 A1 325 309 4.37      
5 A2 236i 224i 0.00      
6 B1 383 364 93.11      
7 B2 4018 3818 150.26      
8 B2 1557 1479 337.96      
9 B2 455 433 356.72      

Unscaled Zero Point Vibrational Energy (zpe) 5932.9 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 5638.0 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 MP2/6-311G*
ABC
17.32736 0.22859 0.22561

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.030
O2 0.000 1.428 0.073
O3 0.000 -1.428 0.073
H4 0.000 2.055 -0.643
H5 0.000 -2.055 -0.643

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.42871.42872.16202.1620
O21.42872.85610.95173.5556
O31.42872.85613.55560.9517
H42.16200.95173.55564.1093
H52.16203.55560.95174.1093

picture of Beryllium hydroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Be1 O2 H4 129.434 Be1 O3 H5 129.434
O2 Be1 O3 176.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-166.122331
Energy at 298.15K-166.123940
HF Energy-165.684510
Nuclear repulsion energy48.905336
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 MP2/6-311G*
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 4003 3804 26.22      
2 A 752 714 4.73      
3 A 584 555 103.87      
4 A 341 324 41.02      
5 A 258 245 144.16      
6 B 4001 3802 157.52      
7 B 1556 1479 333.22      
8 B 571 543 381.22      
9 B 329 312 117.13      

Unscaled Zero Point Vibrational Energy (zpe) 6196.4 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 5888.4 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 MP2/6-311G*
ABC
16.01898 0.22731 0.22712

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 -0.036
O2 0.000 1.430 -0.052
O3 0.000 -1.430 -0.052
H4 0.526 2.012 0.489
H5 -0.526 -2.012 0.489

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43041.43042.14482.1448
O21.43042.86060.95283.5241
O31.43042.86063.52410.9528
H42.14480.95283.52414.1595
H52.14483.52410.95284.1595

picture of Beryllium hydroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Be1 O2 H4 127.151 Be1 O3 H5 127.151
O2 Be1 O3 178.675
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability