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Grade: 12
        What is the name of the given structure ? Why does the lone pair does not involve in delocalisation?
2 years ago

Answers : (3)

divyansh
21 Points
							
first of all this compound is pyridine....for first time viewing on this structure i was also confused but i just struck with the view that the lone pair present on the nitrogen is perpendiculat to the other adjacent carbon atoms and we very well know that such type of overlapping cant form a pi bond...........i hope u might have got my point...
2 years ago
Rohit
84 Points
							It`s PYRIDINE.Lone pairs of donor atoms are only used when they are needed to form a planar geometry. i.e all C atoms of the aromatic ring must have sp2 hyb.  for aromatic nature.Here PYRIDINE already has 6 pi electrons and is aromatic. It does not require l.p of N atom.For more clarification study Huckel rule.Other eg. of aromatic compounds are pyrrol, THF, etc.
						
one year ago
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