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: B3PW91/6-31G

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 B3PW91/6-31G
 hartrees
Energy at 0K-166.404229
Energy at 298.15K 
HF Energy-166.404229
Nuclear repulsion energy49.459715
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 B3PW91/6-31G
Rotational Constants (cm-1) from geometry optimized at B3PW91/6-31G
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1 S1C3
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-166.404175
Energy at 298.15K 
HF Energy-166.404175
Nuclear repulsion energy49.615148
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 B3PW91/6-31G
Rotational Constants (cm-1) from geometry optimized at B3PW91/6-31G
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (D*H)

Jump to S1C1 S1C2
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-166.404229
Energy at 298.15K-166.404789
HF Energy-166.404229
Nuclear repulsion energy49.457544
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 B3PW91/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σg 4110 3937 0.00      
2 Σg 789 755 0.00      
3 Σu 4109 3935 364.95      
4 Σu 1687 1615 431.39      
5 Πg 153 146 0.00      
5 Πg 153 146 0.00      
6 Πu 403 386 104.21      
6 Πu 403 386 104.21      
7 Πu 169 162 494.11      
7 Πu 169 162 494.11      

Unscaled Zero Point Vibrational Energy (zpe) 6072.6 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 5815.7 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 B3PW91/6-31G
B
0.22899

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

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 1.398
O3 0.000 0.000 -1.398
H4 0.000 0.000 2.345
H5 0.000 0.000 -2.345

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.39811.39812.34502.3450
O21.39812.79630.94683.7431
O31.39812.79633.74310.9468
H42.34500.94683.74314.6899
H52.34503.74310.94684.6899

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 B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.667      
2 O -0.734      
3 O -0.734      
4 H 0.401      
5 H 0.401      


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 -16.346 0.000 0.000
y 0.000 -16.346 0.000
z 0.000 0.000 -7.064
Traceless
 xyz
x -4.641 0.000 0.000
y 0.000 -4.641 0.000
z 0.000 0.000 9.282
Polar
3z2-r218.563
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 1.265 0.000 0.000
y 0.000 1.265 0.000
z 0.000 0.000 3.643


<r2> (average value of r2) Å2
<r2> 50.551
(<r2>)1/2 7.110