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: MP4/cc-pVTZ

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 MP4/cc-pVTZ
 hartrees
Energy at 0K-166.282726
Energy at 298.15K 
HF Energy-165.719683
Nuclear repulsion energy48.754710
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 MP4/cc-pVTZ
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 3982 3859        
2 A1 742 719        
3 A1 607 588        
4 A1 301 292        
5 A2 215i 209i        
6 B1 339 329        
7 B2 3980 3857        
8 B2 1529 1482        
9 B2 503 488        

Unscaled Zero Point Vibrational Energy (zpe) 5883.6 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 5702.3 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 MP4/cc-pVTZ
ABC
16.60099 0.22718 0.22411

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 -0.001
O2 0.000 1.433 0.081
O3 0.000 -1.433 0.081
H4 0.000 2.050 -0.647
H5 0.000 -2.050 -0.647

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43581.43582.14932.1493
O21.43582.86700.95383.5586
O31.43582.86703.55860.9538
H42.14930.95383.55864.0996
H52.14933.55860.95384.0996

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 126.990 Be1 O3 H5 126.990
O2 Be1 O3 173.474
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at MP4/cc-pVTZ
 hartrees
Energy at 0K-166.283503
Energy at 298.15K-166.285030
HF Energy-165.720165
Nuclear repulsion energy48.732110
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 MP4/cc-pVTZ
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 3965 3843        
2 A 736 713        
3 A 605 587        
4 A 308 299        
5 A 223 216        
6 B 3964 3842        
7 B 1528 1481        
8 B 589 571        
9 B 306 296        

Unscaled Zero Point Vibrational Energy (zpe) 6111.9 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 5923.7 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 MP4/cc-pVTZ
ABC
15.31280 0.22581 0.22554

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

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 -0.060
O3 0.000 -1.437 -0.060
H4 0.531 2.000 0.499
H5 -0.531 -2.000 0.499

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.43751.43752.13102.1310
O21.43752.87320.95503.5220
O31.43752.87323.52200.9550
H42.13100.95503.52204.1385
H52.13103.52200.95504.1385

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 124.697 Be1 O3 H5 124.697
O2 Be1 O3 176.029
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability