H2salen, CAS No. 94-93-9

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94-93-9

Catalog No. EBD46124

CAS 94-93-9

Name H2salen

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Basic Information

Synonyms: alpha,alpha'-diethylenedinitrilodi-o-cresol a,a'-(ethylenedinitrilo)di-o-cresol 2,2'-ethylenebis(nitrilomethylidene)diphenol 2-[((2-[(2-hydroxybenzylidene)amino]ethyl)imino)methyl]phenol labotest-bblt00772290 bis-(salicylidene)-ethylenediamine bis(salicylaldehyde)ethylenediamine ethylene-bis(salicylimine) n,n'-bis(salicylidene)ethylenediamine N,N'-bis(2-hydroxybenzylidene)-1,2-ethylenediamine H2salen N,N'-Ethylenebis(salicylimine) alpha,alpha'-ethylenedinitrilodi-o-cresol

Molecular Formula: C16H16N2O2

Molecular Weight: 268.31

MDL Number: MFCD00002244

Categories: Materials Chemistry > Optoelectronic and Organic Semiconductor Materials > Optoelectronic Functional Compounds Synthetic Chemistry > Catalysts and Ligands > Nitrogen Ligands

Product Description:

N,N'-Disalicylideneethylenediamine, also known as salen ligand (H₂salen), is a classic tetradentate Schiff base ligand formed by the condensation of salicylaldehyde and ethylenediamine. It is a yellow crystalline solid with the CAS number 94-93-9. Its primary and most significant application is in coordination chemistry and materials science. The salen ligand readily chelates with a wide variety of metal ions (e.g., Mn, Co, Ni, Cu, V, Al) to form stable, well-defined metal-salen complexes. These complexes are extensively studied and utilized as catalysts for numerous organic transformations, including epoxidation, cyclopropanation, and asymmetric synthesis. Furthermore, metal-salen complexes exhibit interesting photophysical and electrochemical properties, making them key components in the development of functional materials for applications such as organic light-emitting diodes (OLEDs), sensors, and molecular magnets. While it serves as a fundamental building block (ligand precursor) in synthetic chemistry, its defined role is more specialized than a general-purpose organic synthesis building block. Therefore, its classification is best aligned with functional materials and specialized catalysts rather than generic organic synthesis reagents.

Physical Properties

Melting Point: 127-128 °C(lit.)

Solubility: chloroform: 0.1 g/mL, clear

Analytical Data

Appearance: yellow fine crystalline powder