Molecular structure of tris[(6-bromopyridin-2-yl)- methyl]amine.

Coordination compounds of polydentate nitrogen ligands with metals are used extensively in research areas such as catalysis, and as models of complex active sites of enzymes in bioinorganic chemistry. Tris(2-pyridylmethyl)amine (TPA) is a tripodal tetradentate ligand that is known to form coordination compounds with metals, including copper, iron and zinc. The related compound, tris[(6- bromopyridin-2-yl)methyl]amine (TPABr₃), C₁₈H₁₅Br₃N₄, which possesses a bromine atom on the 6-position of each of the three pyridyl moieties, is also known but has not been heavily investigated. The molecular structure of TPABr₃ as determined by X-ray diffraction is reported here. The TPABr₃ molecule belongs to the triclinic, P1 space group and displays interesting intermolecular Br...Br interactions that provide a stabilizing influence within the molecule. [ABSTRACT FROM AUTHOR]