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: CISD/6-31G

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
1 3 no D*H 1Σg

Conformer 1 (C2V)

Jump to S1C2 S1C3
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-165.856336
Energy at 298.15K 
HF Energy-165.602632
Nuclear repulsion energy49.187707
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 CISD/6-31G
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 4126 3870 7.31      
2 A1 785 736 2.89      
3 A1 391 367 112.27      
4 A1 189 177 516.15      
5 A2 79i 74i 0.00      
6 B1 386 362 59.20      
7 B2 4122 3866 336.57      
8 B2 1667 1563 450.47      
9 B2 132 124 58.57      

Unscaled Zero Point Vibrational Energy (zpe) 5859.1 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 5494.7 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 CISD/6-31G
ABC
212.33730 0.22649 0.22625

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 -0.006
O2 0.000 1.408 0.024
O3 0.000 -1.408 0.024
H4 0.000 2.334 -0.178
H5 0.000 -2.334 -0.178

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.40871.40872.34002.3400
O21.40872.81670.94703.7475
O31.40872.81673.74750.9470
H42.34000.94703.74754.6674
H52.34003.74750.94704.6674

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 166.489 Be1 O3 H5 166.489
O2 Be1 O3 177.562
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1 S1C3
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-165.856347
Energy at 298.15K-165.856995
HF Energy-165.602520
Nuclear repulsion energy49.162185
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 CISD/6-31G
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 4122 3865 4.15      
2 A 783 735 1.59      
3 A 387 363 91.18      
4 A 187 175 250.97      
5 A 90 84 301.54      
6 B 4118 3861 332.88      
7 B 1665 1562 447.69      
8 B 386 362 87.28      
9 B 176 165 377.52      

Unscaled Zero Point Vibrational Energy (zpe) 5956.9 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 5586.4 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 CISD/6-31G
ABC
154.62364 0.22625 0.22620

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.004
O2 0.000 1.410 -0.018
O3 0.000 -1.410 -0.018
H4 0.192 2.325 0.135
H5 -0.192 -2.325 0.135

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.40981.40982.33622.3362
O21.40982.81920.94743.7422
O31.40982.81923.74220.9474
H42.33620.94743.74224.6650
H52.33623.74220.94744.6650

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 164.404 Be1 O3 H5 164.404
O2 Be1 O3 178.199
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (D*H)

Jump to S1C1 S1C2
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-165.856280
Energy at 298.15K 
HF Energy-165.603067
Nuclear repulsion energy49.255187
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 CISD/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 4139 3882 0.00      
2 Σg 788 739 0.00      
3 Σu 4135 3877 367.06      
4 Σu 1674 1570 466.47      
5 Πg 129i 121i 0.00      
5 Πg 129i 121i 0.00      
6 Πu 387 363 52.04      
6 Πu 387 363 52.04      
7 Πu 144i 135i 621.07      
7 Πu 144i 135i 621.07      

Unscaled Zero Point Vibrational Energy (zpe) 5481.5 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 5140.5 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 CISD/6-31G
B
0.22671

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.000
O2 0.000 0.000 1.406
O3 0.000 0.000 -1.406
H4 0.000 0.000 2.352
H5 0.000 0.000 -2.352

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.40571.40572.35172.3517
O21.40572.81140.94613.7574
O31.40572.81143.75740.9461
H42.35170.94613.75744.7035
H52.35173.75740.94614.7035

picture of Beryllium hydroxide state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Be1 O2 H4 180.000 Be1 O3 H5 180.000
O2 Be1 O3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability