The generic structural formula for a
Chapter , Problem 11.32(choose chapter or problem)
The generic structural formula for a 1-alkyl-3-methylimidazolium cation is H3C R C C C N N H + H H where R is a CH21CH22nCH3 alkyl group. The melting points of the salts that form between the 1- alkyl-3-methylimidazolium cation and the PF6 - anion are as follows: R = CH2CH3 1m.p. = 60 C2, R = CH2CH2CH3 1m.p. = 40 C2, R = CH2CH2CH2CH3 1m.p. = 10 C2, and R =CH2CH2CH2CH2CH2CH3 1m.p. = -61 C2. Why does the melting point decrease as the length of alkyl group increases?
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