Answer
IUPAC Naming of the Compound
Step 1: Identify the Parent Structure
The base of the molecule is ethylenediamine, which consists of two nitrogen atoms connected by a two-carbon bridge (–NH–CH₂–CH₂–NH–).
Step 2: Identify and Classify Functional Groups
- Imines (-CH=N-): Formed by condensation of aldehydes with the nitrogen atoms.
- Phenol groups (-OH): Attached at the 3-position of each benzene ring.
- Methoxy groups (-OCH₃): Attached at the 4-position of each benzene ring.
Step 3: Substitution Pattern
Each nitrogen atom of the ethylenediamine is substituted with a 3-hydroxy-4-methoxybenzylidene group, forming a symmetrical bis-imine structure.
Step 4: Assembling the Name
We combine the components into the IUPAC name, indicating identical substitutions on both nitrogens using the “bis” and “N,N'” prefixes.
Final IUPAC Name:
N,N'-bis(3-hydroxy-4-methoxybenzylidene)ethylenediamine
Explanation of the Name Components
| Term | Meaning |
|---|---|
| N,N’ | Indicates substitution on both nitrogen atoms of ethylenediamine |
| bis(…) | Two identical groups are attached |
| 3-hydroxy | Hydroxyl (-OH) group at position 3 on the aromatic ring |
| 4-methoxy | Methoxy (-OCH₃) group at position 4 on the aromatic ring |
| benzylidene | A benzene ring attached through a CH=N- imine group |
| ethylenediamine | Central diamine structure linking the two benzylidene groups |
Summary
The compound is a symmetric Schiff base, formed by condensing ethylenediamine with two equivalents of a substituted benzaldehyde. The resulting structure contains two imine linkages and aromatic rings with hydroxyl and methoxy substituents.