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/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-166.261142
Energy at 298.15K 
HF Energy-165.719991
Nuclear repulsion energy49.012282
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/6-311+G(3df,2p)
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 4075 3886 48.18      
2 A1 750 716 3.72      
3 A1 523 499 199.23      
4 A1 286 273 9.00      
5 A2 193i 184i 0.00      
6 B1 331 316 55.68      
7 B2 4073 3885 182.97      
8 B2 1540 1469 429.51      
9 B2 423 403 266.84      

Unscaled Zero Point Vibrational Energy (zpe) 5903.6 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 5630.3 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/6-311+G(3df,2p)
ABC
20.77321 0.22860 0.22611

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 -0.017
O2 0.000 1.422 0.076
O3 0.000 -1.422 0.076
H4 0.000 2.116 -0.570
H5 0.000 -2.116 -0.570

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.42531.42532.18752.1875
O21.42532.84460.94803.5972
O31.42532.84463.59720.9480
H42.18750.94803.59724.2329
H52.18753.59720.94804.2329

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 133.347 Be1 O3 H5 133.347
O2 Be1 O3 172.548
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at QCISD/6-311+G(3df,2p)
 hartrees
Energy at 0K-166.261768
Energy at 298.15K-166.263092
HF Energy-165.720586
Nuclear repulsion energy48.979983
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/6-311+G(3df,2p)
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 4061 3873 22.45      
2 A 746 711 1.20      
3 A 514 490 93.23      
4 A 302 288 31.52      
5 A 181 172 151.87      
6 B 4060 3872 194.66      
7 B 1538 1467 422.10      
8 B 505 482 347.86      
9 B 291 278 68.52      

Unscaled Zero Point Vibrational Energy (zpe) 6099.2 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 5816.8 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/6-311+G(3df,2p)
ABC
18.81164 0.22743 0.22707

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311+G(3df,2p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.008
O2 0.000 1.426 -0.052
O3 0.000 -1.426 -0.052
H4 0.534 2.069 0.397
H5 -0.534 -2.069 0.397

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.42711.42712.17222.1722
O21.42712.85160.94893.5640
O31.42712.85163.56400.9489
H42.17220.94893.56404.2743
H52.17223.56400.94894.2743

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 131.133 Be1 O3 H5 131.133
O2 Be1 O3 175.210
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability