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

using model chemistry: ROMP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2 1A

Conformer 1 (C2V)

Jump to S1C2
Vibrational Frequencies calculated at ROMP2/3-21G
Rotational Constants (cm-1) from geometry optimized at ROMP2/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at ROMP2/3-21G
 hartrees
Energy at 0K-165.007617
Energy at 298.15K-165.008862
HF Energy-164.743065
Nuclear repulsion energy48.521772
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 ROMP2/3-21G
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 3801 3801        
2 A 813 813        
3 A 494 494        
4 A 257 257        
5 A 231 231        
6 B 3799 3799        
7 B 1696 1696        
8 B 432 432        
9 B 260 260        

Unscaled Zero Point Vibrational Energy (zpe) 5891.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5891.5 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 ROMP2/3-21G
ABC
19.35139 0.22463 0.22342

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 -0.062
O2 0.000 1.433 -0.050
O3 0.000 -1.433 -0.050
H4 0.363 2.129 0.523
H5 -0.363 -2.129 0.523

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43261.43262.23722.2372
O21.43262.86510.97213.6252
O31.43262.86513.62520.9721
H42.23720.97213.62524.3188
H52.23723.62520.97214.3188

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 136.131 Be1 O3 H5 136.131
O2 Be1 O3 179.054
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.803      
2 O -0.802      
3 O -0.802      
4 H 0.400      
5 H 0.400      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 51.919
(<r2>)1/2 7.205