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: HF/CEP-121G*

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
1 3 no D*H 1Σg

Conformer 1 (C2V)

Jump to S1C2 S1C3
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-33.709707
Energy at 298.15K 
HF Energy-33.709707
Nuclear repulsion energy25.330819
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 HF/CEP-121G*
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 4232 3823 78.50      
2 A1 754 681 7.03      
3 A1 659 595 206.51      
4 A1 313 283 21.96      
5 A2 215i 195i 0.00      
6 B1 381 345 140.79      
7 B2 4229 3821 139.36      
8 B2 1556 1405 411.70      
9 B2 531 480 368.05      

Unscaled Zero Point Vibrational Energy (zpe) 6220.1 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 5619.2 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 HF/CEP-121G*
ABC
17.01708 0.23210 0.22898

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.032
O2 0.000 1.419 0.073
O3 0.000 -1.419 0.073
H4 0.000 2.023 -0.650
H5 0.000 -2.023 -0.650

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.41921.41922.13492.1349
O21.41922.83730.94223.5167
O31.41922.83733.51670.9422
H42.13490.94223.51674.0460
H52.13493.51670.94224.0460

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 128.253 Be1 O3 H5 128.253
O2 Be1 O3 176.705
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.554      
2 O -0.731      
3 O -0.731      
4 H 0.454      
5 H 0.454      


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 -2.863 2.863
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.545 0.000 0.000
y 0.000 -15.955 0.000
z 0.000 0.000 -13.783
Traceless
 xyz
x -1.676 0.000 0.000
y 0.000 -0.791 0.000
z 0.000 0.000 2.467
Polar
3z2-r24.934
x2-y2-0.590
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.927 0.000 0.000
y 0.000 3.072 0.000
z 0.000 0.000 2.104


<r2> (average value of r2) Å2
<r2> 42.882
(<r2>)1/2 6.548

Conformer 2 (C2)

Jump to S1C1 S1C3
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-33.710660
Energy at 298.15K-33.712250
HF Energy-33.710660
Nuclear repulsion energy25.335396
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 HF/CEP-121G*
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 4220 3813 33.88      
2 A 752 679 0.57      
3 A 635 574 102.42      
4 A 344 310 92.29      
5 A 198 179 181.16      
6 B 4218 3811 175.13      
7 B 1558 1408 405.75      
8 B 636 575 444.72      
9 B 325 294 118.46      

Unscaled Zero Point Vibrational Energy (zpe) 6443.7 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 5821.2 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 HF/CEP-121G*
ABC
16.19453 0.23111 0.23057

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 -0.027
O2 0.000 1.420 -0.047
O3 0.000 -1.420 -0.047
H4 0.581 1.987 0.432
H5 -0.581 -1.987 0.432

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.41981.41982.12042.1204
O21.41982.83940.94293.4889
O31.41982.83943.48890.9429
H42.12040.94293.48894.1404
H52.12043.48890.94294.1404

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 126.463 Be1 O3 H5 126.463
O2 Be1 O3 178.359
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.550      
2 O -0.730      
3 O -0.730      
4 H 0.455      
5 H 0.455      


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 1.869 1.869
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.482 5.207 0.000
y 5.207 -16.624 0.000
z 0.000 0.000 -15.337
Traceless
 xyz
x 1.498 5.207 0.000
y 5.207 -1.714 0.000
z 0.000 0.000 0.215
Polar
3z2-r20.431
x2-y22.141
xy5.207
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.048 0.142 0.000
y 0.142 3.056 0.000
z 0.000 0.000 2.021


<r2> (average value of r2) Å2
<r2> 42.827
(<r2>)1/2 6.544

Conformer 3 (D*H)

Jump to S1C1 S1C2
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-33.701598
Energy at 298.15K 
HF Energy-33.701598
Nuclear repulsion energy25.502814
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 HF/CEP-121G*
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 4380 3957 0.00      
2 Σg 789 713 0.00      
3 Σu 4376 3953 493.90      
4 Σu 1608 1453 595.25      
5 Πg 479i 433i 0.00      
5 Πg 479i 433i 0.00      
6 Πu 370 334 35.93      
6 Πu 370 334 35.93      
7 Πu 477i 431i 517.23      
7 Πu 477i 431i 517.23      

Unscaled Zero Point Vibrational Energy (zpe) 4990.1 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 4508.1 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 HF/CEP-121G*
B
0.23133

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

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 1.392
O3 0.000 0.000 -1.392
H4 0.000 0.000 2.325
H5 0.000 0.000 -2.325

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.39181.39182.32542.3254
O21.39182.78370.93353.7172
O31.39182.78373.71720.9335
H42.32540.93353.71724.6508
H52.32543.71720.93354.6508

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 HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Be 0.681      
2 O -0.798      
3 O -0.798      
4 H 0.457      
5 H 0.457      


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 -16.435 0.000 0.000
y 0.000 -16.435 0.000
z 0.000 0.000 -7.857
Traceless
 xyz
x -4.289 0.000 0.000
y 0.000 -4.289 0.000
z 0.000 0.000 8.578
Polar
3z2-r217.156
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 1.792 0.000 0.000
y 0.000 1.792 0.000
z 0.000 0.000 3.246


<r2> (average value of r2) Å2
<r2> 42.541
(<r2>)1/2 6.522