Which of the following statement is/are correct ?

Options

A. `(I)` and `(II)` are aromatic and have equal basic strength.
B. `(I)` is aromatic and `(II)` is anti-aromatic, but `(II)` is stronger base than `(I)`
C. The order of basicity of the above compounds is `(IV) gt (III) gt (II) gt (I)`.
D. The conjugate acid of `(IV)` is more stabilised than the conjugate acid of `(II)`.

Answer

C

Explanation

(c ) In `IV`, lone pair of two `N` makes it more basic and does not delocalise in the benzene ring.
In `III`, no delocalisation of `LP` of `overline e^, s` on `ddot N H_2`
In `II`, no delocalisation of `LP` of `overline e` on `N`
In `I`, delocalisation of `LP` of `overline e^, s` on `N` via resonance.
Hence, the order of basic character is : `IV gt III gt II gt I`.