Chapter 9.3, Problem 3CS

Interpretation Introduction

Interpretation:

The numbers of alternating double bonds in Tyrian purple and in nitrated butter yellow have to be determined.

Concept Introduction:

Formation of double bond: In molecule that the single and double bond alternate, these enables the electrons to be delocalised over the whole system and shared for many atoms. For example one of double bond delocalized electrons may move around the whole system.

The most of common double bond is between two carbons atoms can be found in alkenes.