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

using model chemistry: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
1 3 no D*H 1Σg

Conformer 1 (C2V)

Jump to S1C2 S1C3
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-164.991364
Energy at 298.15K 
HF Energy-164.743985
Nuclear repulsion energy48.803145
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 CID/3-21G*
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 3905 3633 26.74      
2 A1 829 772 24.78      
3 A1 489 455 297.89      
4 A1 264 245 5.72      
5 A2 155i 145i 0.00      
6 B1 308 287 151.76      
7 B2 3901 3630 152.81      
8 B2 1727 1607 306.45      
9 B2 313 292 370.40      

Unscaled Zero Point Vibrational Energy (zpe) 5790.4 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 5387.9 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 CID/3-21G*
ABC
25.26136 0.22674 0.22473

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Be1 0.000 0.000 0.049
O2 0.000 1.422 0.055
O3 0.000 -1.422 0.055
H4 0.000 2.185 -0.536
H5 0.000 -2.185 -0.536

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.42241.42242.26172.2617
O21.42242.84490.96433.6553
O31.42242.84493.65530.9643
H42.26170.96433.65534.3696
H52.26173.65530.96434.3696

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 142.001 Be1 O3 H5 142.001
O2 Be1 O3 179.528
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1 S1C3
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-164.991539
Energy at 298.15K 
HF Energy-164.743878
Nuclear repulsion energy48.751438
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 CID/3-21G*
Rotational Constants (cm-1) from geometry optimized at CID/3-21G*
ABC
25.26136 0.22674 0.22473

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (D*H)

Jump to S1C1 S1C2
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-164.989338
Energy at 298.15K 
HF Energy-164.744383
Nuclear repulsion energy49.254767
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 CID/3-21G*
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 4015 3736 0.00      
2 Σg 850 791 0.00      
3 Σu 4011 3732 341.72      
4 Σu 1784 1660 400.92      
5 Πg 251i 234i 0.00      
5 Πg 251i 234i 0.00      
6 Πu 294 273 32.41      
6 Πu 294 273 32.41      
7 Πu 314i 293i 564.96      
7 Πu 314i 293i 564.96      

Unscaled Zero Point Vibrational Energy (zpe) 5057.8 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 4706.3 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 CID/3-21G*
B
0.22759

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

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 1.402
O3 0.000 0.000 -1.402
H4 0.000 0.000 2.358
H5 0.000 0.000 -2.358

Atom - Atom Distances (Å)
  Be1 O2 O3 H4 H5
Be11.40181.40182.35792.3579
O21.40182.80370.95613.7597
O31.40182.80373.75970.9561
H42.35790.95613.75974.7158
H52.35793.75970.95614.7158

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