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: MP3/6-31+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 MP3/6-31+G**
 hartrees
Energy at 0K-166.082657
Energy at 298.15K 
HF Energy-165.663262
Nuclear repulsion energy48.827483
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 MP3/6-31+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 4145 3857 62.00      
2 A1 749 697 6.26      
3 A1 539 501 281.05      
4 A1 302 281 0.08      
5 A2 205i 191i 0.00      
6 B1 414 385 114.05      
7 B2 4143 3855 189.98      
8 B2 1549 1442 482.42      
9 B2 370 345 291.57      

Unscaled Zero Point Vibrational Energy (zpe) 6002.6 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 5585.4 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 MP3/6-31+G**
ABC
21.52331 0.22635 0.22399

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.013
O2 0.000 1.429 0.068
O3 0.000 -1.429 0.068
H4 0.000 2.129 -0.573
H5 0.000 -2.129 -0.573

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43031.43032.20822.2082
O21.43032.85830.94963.6156
O31.43032.85833.61560.9496
H42.20820.94963.61564.2581
H52.20823.61560.94964.2581

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 135.245 Be1 O3 H5 135.245
O2 Be1 O3 175.532
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at MP3/6-31+G**
 hartrees
Energy at 0K-166.083431
Energy at 298.15K-166.084860
HF Energy-165.663853
Nuclear repulsion energy48.789869
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 MP3/6-31+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 4126 3840 24.47      
2 A 744 692 1.33      
3 A 522 486 152.00      
4 A 353 328 30.59      
5 A 178 165 206.81      
6 B 4125 3838 208.15      
7 B 1546 1438 471.21      
8 B 530 493 390.54      
9 B 323 301 130.21      

Unscaled Zero Point Vibrational Energy (zpe) 6223.3 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 5790.8 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 MP3/6-31+G**
ABC
19.14861 0.22553 0.22481

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 -0.013
O2 0.000 1.432 -0.043
O3 0.000 -1.432 -0.043
H4 0.561 2.080 0.369
H5 -0.561 -2.080 0.369

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43261.43262.18832.1883
O21.43262.86460.95083.5810
O31.43262.86463.58100.9508
H42.18830.95083.58104.3094
H52.18833.58100.95084.3094

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 132.268 Be1 O3 H5 132.268
O2 Be1 O3 177.630
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability