Advertisements
Advertisements
Question
Explain the Structure of Diborane.
Advertisements
Solution
B2H6 is an electron-deficient compound. B2H6 has only 12 electrons – 6 e– from 6 H atoms and 3 e– each from 2 B atoms. Thus, after combining with 3 H atoms, none of the boron atoms has any electrons left. X-ray diffraction studies have shown the structure of diborane as:
2 boron and 4 terminal hydrogen atoms (Ht) lie in one plane, while the other two bridging hydrogen atoms (Hb) lie in a plane perpendicular to the plane of boron atoms. Again, of the two bridging hydrogen atoms, one H atom lies above the plane and the other lies below the plane. The terminal bonds are regular two-centre two-electron (2c – 2e–) bonds, while the two bridging (B–H–B) bonds are three-centre two-electron (3c – 2e–) bonds.
RELATED QUESTIONS
Explain what happens when boric acid is heated.
Explain the Structure of Boric Acid.
Explain the following reaction.
Hydrated alumina is treated with aqueous NaOH solution.
Write a balanced equation for \[\ce{H3BO3 ->[\Delta]}\]?
Boric acid is polymeric due to ______.
Boric acid is an acid because its molecule ______.
When aqueous solution of borax is acidified with hydrochloric acid, a white crystalline solid is formed which is soapy to touch. Is this solid acidic or basic in nature? Explain.
Boric acid heated to red hot gives ______.
In diborane ______.
On the addition of mineral acid to an aqueous solution of borax, the compound formed is ______.
Boron reacts with nitric acid to form ______.
Which one of the following methods is used to prepare borax crystals?
Boric acid (H3BO3) is ______.
Borazine, also known as inorganic benzene, can be prepared by the reaction of 3-equivalents of “X” with 6-equivalents of “Y”. “X” and “Y”, respectively are ______.
The reaction of H3N3B3Cl3(A) with LiBH4 in tetrahydrofuran gives inorganic benzene (B). Further, the reaction of (A) with (C) leads to H3N3B3(Me)3. Compounds (B) and (C) respectively, are ______.
