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Description
TCI E0101, 2,2'-(1,2-Ethanediyldiimino)dibenzoic Acid, is an organic compound that joins two benzoic acid rings through an ethylenediamine bridge by way of nitrogen–aryl bonds. This architecture positions it as a high-value building block in organic synthesis and coordination chemistry, because a single molecule carries two carboxylic acid groups and two secondary amine nitrogen atoms that are ready to act as electron donors. In the laboratory, the compound is used as a ligand precursor, as a starting material for the construction of macrocyclic compounds, and as a reagent for assembling molecular frameworks that require two-sided aromatic symmetry.
The characteristic that makes this material a preferred choice is its neatly arranged N2O2 donor set held on a semi-rigid backbone. The combination of amine nitrogen and carboxylate oxygen allows chelate complexes to be formed with a wide range of metals, while the ethylene bridge provides limited flexibility so that the resulting coordination geometry is easier to predict. The presence of the aromatic rings gives the compound useful ultraviolet absorption behaviour for reaction monitoring and characterisation, and at the same time opens the way to further modification through reactions on the ring system.
In Indonesian laboratories, this building block is typically encountered in university and institutional research settings where coordination chemistry, ligand design, and multi-step organic synthesis are being carried out. It is normally ordered in research-scale quantities for method development, thesis and dissertation work, and the preparation of metal complexes for further study. Because it is supplied as a catalogue reagent from TCI, it is generally handled alongside other fine chemicals in a controlled reagent store rather than in bulk process areas.
Laboratory Applications
- Ligand precursor synthesis: the paired secondary amine nitrogen atoms and carboxylic acid groups give a ready-made N2O2 donor arrangement, so the compound can be converted into chelating ligands without lengthy functional group installation.
- Metal complex preparation: the compound forms chelate complexes with a variety of metals, and its semi-rigid ethylene bridge restricts conformational freedom so that the coordination geometry around the metal centre becomes more predictable during structural work.
- Macrocyclic compound construction: because both ends of the molecule carry reactive donor functionality on a symmetric backbone, it serves as a starting material for ring-closing routes toward macrocyclic frameworks in coordination chemistry.
- Symmetric scaffold building in organic synthesis: researchers select this reagent when a target framework requires two aromatic sides arranged symmetrically, since that symmetry is already built into the parent structure and need not be assembled stepwise.
- Reaction monitoring and characterisation support: the aromatic rings provide ultraviolet absorption that can be followed analytically, making it convenient to track conversion and to characterise the compound and its derivatives during synthetic studies.
Specifications
- Brand: TCI (Tokyo Chemical Industry), catalogue code E0101
- CAS number: 34827-82-2
- Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
- Chemical name: 2,2'-(1,2-Ethanediyldiimino)dibenzoic Acid
- Pack sizes: available in standard TCI research-scale catalogue pack sizes; please confirm the size required when ordering
- Storage: keep in the closed original container in a cool, dry place away from moisture and direct light
Handling and Storage
Store the compound in its original tightly closed TCI container, kept in a cool, dry, and well ventilated reagent cabinet away from direct sunlight, heat sources, and moisture. Amber glass or the supplier's own container is suitable for keeping the material protected from light, and containers should be resealed promptly after each use to limit exposure to humid air. Handle the solid inside a fume hood where dust may be generated, and wear a laboratory coat, safety glasses, and chemical-resistant gloves. Avoid inhaling dust and avoid contact with skin and eyes. Keep the material separated from strong oxidising agents and strong bases, use clean and dry spatulas when weighing, and consult the manufacturer's safety data sheet before first use for the complete handling and disposal instructions.
