Chlorin

• 2,3- dihydroporphyrin
• ( 1Z, 4Z, 9Z, 15Z ) - -2,3,21,23 Tetrahydroporphin
• Chlorin T1

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Chlorin (2,3- dihydroporphyrin ) is a heterocyclic aromatic chemical compound, which is composed of three pyrrole and pyrroline. It is a macrocycle that is structurally closely related to porphine, the parent compound of the porphyrins. Chlorine forms the basic structure of the Chlorine, a group of substances that act as macrocyclic ligands in biological systems.

Occurrence

Derivatives of chlorin come in a form complexed with magnesium cations naturally in certain chlorophylls before ( chlorophyll a, b ​​and d).

Representation

Chlorin may be made of the reaction between 2 - are prepared ( N, N- dimethylamino)- methylpyrrole and ethyl magnesium bromide.

Properties

Physical Properties

Chlorin is a colored compound whose absorption maximum in benzene at 388 nm ( Soret band ). Another intense absorption band occurs at 637.5 nm. Shift the absorption maxima upon complexation. Thus, the Soret band of the magnesium complex is at 402 nm of the copper complex at 396 nm

Chemical Properties

Chlorin has two acidic protons which are bonded to nitrogen atoms. In deprotonated form it is a very good complexing agent and is able to form with divalent cations thermodynamically stable, but substitution labile complexes.