4,7-dibromo-1,10-phenanthroline

China [CN]

I. Basic Information

Chinese Name: 4,7-Dibromo-1,10-phenanthroline

English Name: 4,7-Dibromo-1,10-phenanthroline

CAS Number: 1661-21-8

Molecular Formula: C₁₂H₆Br₂N₂

Molecular Weight: 342.00 (Calculated: C 42.14%, H 1.77%, Br 46.77%, N 8.19%)

II. Chemical Structure and Characteristics

Structural Analysis: The molecule is based on 1,10-phenanthroline (o-diazophenanthroline, a tricyclic structure formed by the fusion of two pyridine rings) as the core, with a bromine atom (-Br) attached to the 4th and 7th positions.

Core Features:

The phenanthroline ring possesses strong aromaticity and a rigid planar structure. The two nitrogen atoms (the nitrogen atoms in the pyridine ring) possess lone pairs of electrons, which can serve as ligands to form stable chelates with metal ions (such as Fe²⁺, Cu²⁺, and Zn²⁺).

The bromine atoms at positions 4 and 7 are strong electron-withdrawing substituents, enhancing the ring's electrophilic reactivity while modulating its coordination with metal ions through steric hindrance and electronic effects.