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: QCISD/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 QCISD/6-311G**
 hartrees
Energy at 0K-166.157233
Energy at 298.15K 
HF Energy-165.698098
Nuclear repulsion energy48.922838
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/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 4043 3858 53.51      
2 A1 751 717 13.25      
3 A1 660 629 113.99      
4 A1 332 317 19.30      
5 A2 232i 222i 0.00      
6 B1 383 366 89.64      
7 B2 4041 3855 113.24      
8 B2 1546 1475 328.50      
9 B2 519 496 318.05      

Unscaled Zero Point Vibrational Energy (zpe) 6021.5 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 5745.1 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 QCISD/6-311G**
ABC
15.11974 0.22926 0.22584

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.029
O2 0.000 1.431 0.079
O3 0.000 -1.431 0.079
H4 0.000 1.995 -0.688
H5 0.000 -1.995 -0.688

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43191.43192.11982.1198
O21.43192.86200.95183.5107
O31.43192.86203.51070.9518
H42.11980.95183.51073.9898
H52.11983.51070.95183.9898

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 124.338 Be1 O3 H5 124.338
O2 Be1 O3 176.015
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-166.158184
Energy at 298.15K-166.159877
HF Energy-165.698561
Nuclear repulsion energy48.914769
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/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 4025 3840 32.35      
2 A 745 711 4.51      
3 A 648 618 72.92      
4 A 342 326 38.38      
5 A 260 248 111.99      
6 B 4023 3838 123.12      
7 B 1546 1475 323.00      
8 B 619 590 324.17      
9 B 337 321 104.72      

Unscaled Zero Point Vibrational Energy (zpe) 6271.8 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 5983.9 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/6-311G**
ABC
14.15505 0.22803 0.22755

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/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 1.433 -0.058
O3 0.000 -1.433 -0.058
H4 0.535 1.949 0.538
H5 -0.535 -1.949 0.538

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43311.43312.10142.1014
O21.43312.86600.95293.4759
O31.43312.86603.47590.9529
H42.10140.95293.47594.0431
H52.10143.47590.95294.0431

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 122.163 Be1 O3 H5 122.163
O2 Be1 O3 178.247
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability