6. (C) Br,BN, is a stable compound of boron that exits as a monomer Br₂BN, in the gas phase and as a trimer (Br₂BN3), in the solid state. (a) Write the Lewis structure of the Br₂BN3 monomer in which B is bonded to two Br atoms and one azide group (linear Nj species). Please note that the terminal N-N bond length of the azide in Br₂BN, is close to that of elemental N₂. (b) The Br,BN, compound in the solid state is a trimer in which alpha N atoms (N directly bonded to B) of the N, group are bridging the B atoms to form a hexagonal B,N, ring. Draw the structure of the trimer and explain using octet rule arguments why Br₂BNs prefers to combine with itself to make (Br₂BN) trimers.

6. (C) Br,BN, is a stable compound of boron that exits as a monomer Br₂BN, in the gas phase and as a trimer (Br₂BN3), in the solid state. (a) Write the Lewis structure of the Br₂BN3 monomer in which B is bonded to two Br atoms and one azide group (linear Nj species). Please note that the terminal N-N bond length of the azide in Br₂BN, is close to that of elemental N₂. (b) The Br,BN, compound in the solid state is a trimer in which alpha N atoms (N directly bonded to B) of the N, group are bridging the B atoms to form a hexagonal B,N, ring. Draw the structure of the trimer and explain using octet rule arguments why Br₂BNs prefers to combine with itself to make (Br₂BN) trimers.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter19: The Chemistry Of The Main-group Elements

Section: Chapter Questions

Problem 66QRT

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