give the structure of di boron B2H6

Asked by Aakrati Gawande | 26th Mar, 2014, 03:23: PM

Expert Answer:

Diborane (B2H6) has D2h structure containing conventional covalent bond structure. It has four terminal and two bridged hydrogen atoms.

There are four terminal B-H bonds are two centre - two electron bonds. Two bridge B − H − B bonds are three centre - two electron bonds.

The bond between boron and hydrogen are held together by four electrons (each boron has 1 valence electron from 1 from hydrogen). It forms 3-centre-2-electron bonding. The structure looks like banana hence called as banana bond.

The bond length of B-H(bridge) and B-H(terminal) is 1.22 A and 1.19 A. The B-H(bridge) bond is weaker compared to B-H(terminal).


Answered by  | 27th Mar, 2014, 10:41: AM

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