0
ortho-para in benzene is meaningless these positions are for monosubstituted benzene. Meta is positions 3 and 5. Ortho is position 2 and 6 with relation to already attached group, para is 4 (opposite) to attached group.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What are the differences between ortho hydrogen and para hydrogen?
Positioning around a benzene ring relative to the major functional group. Para is opposite, ortho is next to, meta is in between.
What are the prefixes used to designate substituent positions on disubstituted benzene compounds?
ortho- (1,2), meta- (1,3), para- (1,4)
Activating and deactivating group of Ortho para and meta director groups Explain?
You can either deactivate or activate the group of Ortho para and Meta director groups depending with your preference.
Why ortha para directors activate the benzene ring?
Ortho-para directing groups are those which can donate the electrons (lone pair or bonding pair by hyperconjugation) to benzene ring and create a negative charge on ortho and para positions by process of resonance so the attack of next incoming electrophile becomes easier as compare to unsubstituted benzene.
Compare the basicity of isomers of toluidine?
As expected from Inductive(/hypercojugative) as well as ortho effect the basicity order should be: ortho-toluidine>para-toluidine>meta-toluidine. But, experimental order is: para-toluidine(Pka=5.12)>meta-toluidine(Pka=4.69)>ortho-toluidine(Pka=4.39).The order of basicity is explained by two opposing effects :i) inductive effect ii) Stability of the conjugate base. Here 2nd factor is more significant for ortho-toluidine & 1st factor is important for para-toluidine. For ortho-toluidine the conjugate base [o-MeC6H4NH3+] is destabilized by steric interaction between -NH3+ & -Me(at ortho). This desatabilization is absent with para-toluidine & meta-toluidine.Tha's why basicity of: ortho-toluidine(Pka=4.39)
What are the differences between ortho hydrogen and para hydrogen?
Positioning around a benzene ring relative to the major functional group. Para is opposite, ortho is next to, meta is in between.
What are the prefixes used to designate substituent positions on disubstituted benzene compounds?
ortho- (1,2), meta- (1,3), para- (1,4)
Why methyl attached to benzene is ortho-para director group?
This group attached to benzene ring acts as the ortho-para directing group due to Hyperconjugation.
What is the ortho-peradirective nature?
I think you're asking about ortho-para directors. o,p directors are groups bonded to a benzene ring that direct additional groups in electrophilic aromatic substitution reactions to attach to the ortho and para positions of the benzene ring. Ortho is the position next to the group and para is the position across from the group on the benzene ring. o,p directors are electron donating groups such as methoxy groups. These groups stabilize the positive charge created in the intermediate when the electrophile adds to the ortho and para positions. o,p directors do not, however, stabilize the positive charge when the electrophile adds to the meta position and therefore only allow addition to the ortho and para positions (thus the name ortho-para director).
Activating and deactivating group of Ortho para and meta director groups Explain?
You can either deactivate or activate the group of Ortho para and Meta director groups depending with your preference.
What are the examples of Ortho and para directing group and mata directing group?
Electrophilic Aromatic Substitution is an example of Ortho and para directing group and meta directing group.
Why ortha para directors activate the benzene ring?
Ortho-para directing groups are those which can donate the electrons (lone pair or bonding pair by hyperconjugation) to benzene ring and create a negative charge on ortho and para positions by process of resonance so the attack of next incoming electrophile becomes easier as compare to unsubstituted benzene.
Compare the basicity of isomers of toluidine?
As expected from Inductive(/hypercojugative) as well as ortho effect the basicity order should be: ortho-toluidine>para-toluidine>meta-toluidine. But, experimental order is: para-toluidine(Pka=5.12)>meta-toluidine(Pka=4.69)>ortho-toluidine(Pka=4.39).The order of basicity is explained by two opposing effects :i) inductive effect ii) Stability of the conjugate base. Here 2nd factor is more significant for ortho-toluidine & 1st factor is important for para-toluidine. For ortho-toluidine the conjugate base [o-MeC6H4NH3+] is destabilized by steric interaction between -NH3+ & -Me(at ortho). This desatabilization is absent with para-toluidine & meta-toluidine.Tha's why basicity of: ortho-toluidine(Pka=4.39)
What do you mean by the donor and acceptor ions?
Donor group are ortho-para directory groups that means increases in pai density of ortho para directory. Adaptor group meta directing groups that means increases in pai density of meta directing groups.
Why does chlorobenzene give ortho and para products during electrophilic substitution reaction?
As there is an availability of lone pair of electrons on chlorine, it directs the benzene ring towards electrophilic substitution at ortho and para positions.. When we will draw the resonating structures of chloro benzene,we will see that negative charge resides at orho and para positions..
Draw resonance structure of benzene?
For benzene, all you have to do is move the double bonds of the ring around. And for the H2NCH2+, you have 2H on the N, and then a double bond between N and C, then two H bonded to the C.
What is xylene?
The term xylene refers to a mixture of three aromatic hydrocarbon isomers essentially benzene derivatives, which encompasses ortho-, meta-, and para- isomers of dimethyl benzene.
