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

using model chemistry: ROMP2/6-31G(2df,p)

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 ROMP2/6-31G(2df,p)
Rotational Constants (cm-1) from geometry optimized at ROMP2/6-31G(2df,p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-31G(2df,p)
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at ROMP2/6-31G(2df,p)
 hartrees
Energy at 0K-166.165206
Energy at 298.15K-166.166700
HF Energy-165.666708
Nuclear repulsion energy48.951860
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 ROMP2/6-31G(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 4024 4024        
2 A 745 745        
3 A 588 588        
4 A 305 305        
5 A 224 224        
6 B 4022 4022        
7 B 1557 1557        
8 B 581 581        
9 B 299 299        

Unscaled Zero Point Vibrational Energy (zpe) 6171.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6171.8 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 ROMP2/6-31G(2df,p)
ABC
15.35978 0.22801 0.22786

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 -0.011
O2 0.000 1.429 -0.056
O3 0.000 -1.429 -0.056
H4 0.565 1.989 0.469
H5 -0.565 -1.989 0.469

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43021.43022.12242.1224
O21.43022.85890.95283.5041
O31.43022.85893.50410.9528
H42.12240.95283.50414.1347
H52.12243.50410.95284.1347

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 124.701 Be1 O3 H5 124.701
O2 Be1 O3 176.407
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.233      
2 O -0.456      
3 O -0.456      
4 H 0.339      
5 H 0.339      


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> 51.253
(<r2>)1/2 7.159