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: QCISD/6-31+G**

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

Conformer 1 (C2V)

Jump to S1C2
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-166.092173
Energy at 298.15K 
HF Energy-165.662872
Nuclear repulsion energy48.675396
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 QCISD/6-31+G**
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 4087 3864 55.41      
2 A1 739 698 6.08      
3 A1 532 503 264.76      
4 A1 301 285 0.00      
5 A2 214i 202i 0.00      
6 B1 406 384 99.56      
7 B2 4086 3863 183.72      
8 B2 1528 1445 457.86      
9 B2 370 350 289.18      

Unscaled Zero Point Vibrational Energy (zpe) 5917.5 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 5594.4 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 QCISD/6-31+G**
ABC
21.19477 0.22501 0.22265

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.008
O2 0.000 1.434 0.070
O3 0.000 -1.434 0.070
H4 0.000 2.134 -0.576
H5 0.000 -2.134 -0.576

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43491.43492.21232.2123
O21.43492.86710.95273.6253
O31.43492.86713.62530.9527
H42.21230.95273.62534.2675
H52.21233.62530.95274.2675

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 134.834 Be1 O3 H5 134.834
O2 Be1 O3 175.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-166.093024
Energy at 298.15K-166.094453
HF Energy-165.663434
Nuclear repulsion energy48.630121
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 QCISD/6-31+G**
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 4066 3844 21.93      
2 A 733 693 1.26      
3 A 521 493 133.27      
4 A 350 331 31.88      
5 A 185 175 206.33      
6 B 4065 3843 194.51      
7 B 1524 1441 445.00      
8 B 529 500 377.19      
9 B 323 305 123.37      

Unscaled Zero Point Vibrational Energy (zpe) 6147.0 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 5811.4 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 QCISD/6-31+G**
ABC
18.60274 0.22416 0.22342

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 -0.010
O2 0.000 1.437 -0.044
O3 0.000 -1.437 -0.044
H4 0.570 2.080 0.372
H5 -0.570 -2.080 0.372

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43761.43762.18992.1899
O21.43762.87450.95413.5869
O31.43762.87453.58690.9541
H42.18990.95413.58694.3125
H52.18993.58690.95414.3125

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 131.517 Be1 O3 H5 131.517
O2 Be1 O3 177.305
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability