Is nitro group para directing or meta directing?

Thus, the nitro group is a meta directing group. Ortho, para directing groups are electron-donating groups; meta directing groups are electron-withdrawing groups. The halide ions, which are electron-withdrawing but ortho, para directing, are the exception.

Which act as a meta directing group in electrophilic aromatic substitution reactions?

Why nitro group is act as meta directing group in electrophilic aromatic substitution? It decreases electron density at ortho and para position. It decrease electron density at meta position.

What is directive influence of nitro group in electrophilic substitution of aromatic compounds?

Nitro group is a ring deactivating group; they decrease the electron density of the benzene ring attached.

Why is a nitro group a meta director?

Resonating structure of nitrobenzene shows +ve charge develops in ortho and para positions. As a result, the electron density at meta position is relatively higher than at the ortho and para position. Hence, nitro group is meta directing in electrophilic aromatic substitution reaction.

Why is no2 a meta director?

–NO2 group is meta directing because it is an electron withdrawing group. It decreases electron density at ortho– and para–positions thereby directs the incoming group towards meta-position.

Why is nitro group meta directing for nucleophilic substitution?

Since the nitro group is an activator toward nucleophilic substitution, and a meta director, it allows the benzene carbon to which it is bonded to have a negative charge. In order to return to a lower energy state, either the hydroxyl group leaves, or the chloride leaves. In solution both processes happen.

What is the directive influence of nitro group?

In nitro benzene nitro group, the electron density decreases at ortho and a Para position, thus the incoming electrophile is directed to the Meta position. Ring deactivating groups include –CN, –CHO, –COR, –COOH, –COOR and –SO3H directs the incoming group to Meta position.

Why is nitro group in nitrobenzene meta directing?

Yes, Nitro-group is meta-directing. The nitro group strongly deactivates the benzene ring towards electrophilic substitution. Nitro group is electron withdrawing group and thus causes electron deficiency at ortho and para positrons as is clear from the resonating structures of nitro benzene.

Is NO2 group is meta directing?

Since NO2 is an electron withdrawing group, a glance at the resonance structures shows that the positive charge becomes concentrated at the ortho-para positions. Hence, NO2 is a meta-director, as we all learned in organic chemistry.

What is meant by electrophilic nitro group?

The nitro group is one of the most common explosophores (functional group that makes a compound explosive) used globally. For similar reasons, the presence of nitro groups in aromatic compounds retards electrophilic aromatic substitution but facilitates nucleophilic aromatic substitution.