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All results from a given calculation for Be(OH)2 (Beryllium hydroxide)

using model chemistry: MP2/6-31G(2df,p)

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 MP2/6-31G(2df,p)
 hartrees
Energy at 0K-166.164176
Energy at 298.15K 
HF Energy-165.665984
Nuclear repulsion energy48.969999
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 MP2/6-31G(2df,p)
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 4040 3816 64.83      
2 A1 750 708 10.01      
3 A1 593 560 139.31      
4 A1 292 276 10.45      
5 A2 231i 218i 0.00      
6 B1 339 320 57.04      
7 B2 4037 3813 181.90      
8 B2 1557 1471 307.35      
9 B2 479 452 301.46      

Unscaled Zero Point Vibrational Energy (zpe) 5928.2 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 5599.2 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 MP2/6-31G(2df,p)
ABC
16.63565 0.22940 0.22628

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.003
O2 0.000 1.427 0.080
O3 0.000 -1.427 0.080
H4 0.000 2.040 -0.648
H5 0.000 -2.040 -0.648

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.42871.42872.14072.1407
O21.42872.85310.95173.5418
O31.42872.85313.54180.9517
H42.14070.95173.54184.0792
H52.14073.54180.95174.0792

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 126.981 Be1 O3 H5 126.981
O2 Be1 O3 173.755
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-166.165205
Energy at 298.15K-166.166715
HF Energy-165.666707
Nuclear repulsion energy48.949961
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 MP2/6-31G(2df,p)
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 4023 3800 33.02      
2 A 745 703 3.55      
3 A 589 557 69.32      
4 A 306 289 39.19      
5 A 230 218 120.35      
6 B 4021 3798 199.09      
7 B 1557 1470 300.18      
8 B 584 551 336.57      
9 B 301 284 76.95      

Unscaled Zero Point Vibrational Energy (zpe) 6177.9 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 5835.1 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 MP2/6-31G(2df,p)
ABC
15.34084 0.22802 0.22782

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 -0.012
O2 0.000 1.430 -0.055
O3 0.000 -1.430 -0.055
H4 0.569 1.988 0.467
H5 -0.569 -1.988 0.467

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43021.43022.12232.1223
O21.43022.85920.95283.5036
O31.43022.85923.50360.9528
H42.12230.95283.50364.1353
H52.12233.50360.95284.1353

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 124.680 Be1 O3 H5 124.680
O2 Be1 O3 176.513
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability