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

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 3 yes D*H 1Σg

Conformer 1 (C2V)

Jump to S1C2 S1C3
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-165.528248
Energy at 298.15K 
HF Energy-165.528248
Nuclear repulsion energy49.138167
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 B3PW91/3-21G*
Rotational Constants (cm-1) from geometry optimized at B3PW91/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1 S1C3
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-165.529402
Energy at 298.15K 
HF Energy-165.529402
Nuclear repulsion energy48.730798
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 B3PW91/3-21G*
Rotational Constants (cm-1) from geometry optimized at B3PW91/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (D*H)

Jump to S1C1 S1C2
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-165.527821
Energy at 298.15K 
HF Energy-165.527821
Nuclear repulsion energy49.184514
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 B3PW91/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 3962 3801 0.00      
2 Σg 831 797 0.00      
3 Σu 3959 3798 367.67      
4 Σu 1754 1682 342.68      
5 Πg 208i 199i 0.00      
5 Πg 208i 199i 0.00      
6 Πu 305 293 37.77      
6 Πu 305 293 37.77      
7 Πu 271i 260i 491.13      
7 Πu 271i 260i 491.13      

Unscaled Zero Point Vibrational Energy (zpe) 5078.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 4872.4 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 B3PW91/3-21G*
B
0.22711

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

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 1.403
O3 0.000 0.000 -1.403
H4 0.000 0.000 2.362
H5 0.000 0.000 -2.362

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.40311.40312.36252.3625
O21.40312.80620.95943.7655
O31.40312.80623.76550.9594
H42.36250.95943.76554.7249
H52.36253.76550.95944.7249

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
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.595      
2 O -0.690      
3 O -0.690      
4 H 0.393      
5 H 0.393      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.270 0.000 0.000
y 0.000 -16.270 0.000
z 0.000 0.000 -6.144
Traceless
 xyz
x -5.063 0.000 0.000
y 0.000 -5.063 0.000
z 0.000 0.000 10.126
Polar
3z2-r220.252
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.224 0.000 0.000
y 0.000 1.224 0.000
z 0.000 0.000 3.798


<r2> (average value of r2) Å2
<r2> 50.715
(<r2>)1/2 7.121