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All results from a given calculation for B2H4 (Diborane(4) D2d)

using model chemistry: MP2=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at MP2=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-51.888972
Energy at 298.15K-51.891442
HF Energy-51.650107
Nuclear repulsion energy22.359980
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 MP2=FULL/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2631 2481 0.00      
2 A1 1235 1164 0.00      
3 A1 868 819 0.00      
4 B1 536 505 0.00      
5 B2 2612 2463 74.30      
6 B2 1174 1107 10.93      
7 E 2689 2535 86.45      
7 E 2689 2535 86.45      
8 E 1015 957 28.35      
8 E 1015 957 28.35      
9 E 413 389 6.29      
9 E 413 389 6.29      

Unscaled Zero Point Vibrational Energy (zpe) 8645.7 cm-1
Scaled (by 0.9427) Zero Point Vibrational Energy (zpe) 8150.3 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 MP2=FULL/6-311+G(3df,2p)
ABC
4.07826 0.66293 0.66293

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311+G(3df,2p)

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.822
B2 0.000 0.000 -0.822
H3 0.000 1.013 1.450
H4 0.000 -1.013 1.450
H5 1.013 0.000 -1.450
H6 -1.013 0.000 -1.450

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.64461.19131.19132.48762.4876
B21.64462.48762.48761.19131.1913
H31.19132.48762.02523.23403.2340
H41.19132.48762.02523.23403.2340
H52.48761.19133.23403.23402.0252
H62.48761.19133.23403.23402.0252

picture of Diborane(4) D2d state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H5 121.789 B1 B2 H6 121.789
B2 B1 H3 121.789 B2 B1 H4 121.789
H3 B1 H4 116.422 H5 B2 H6 116.422
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability