Review. Inverse coordination. Organic nitrogen heterocycles as coordination centers. A survey of molecular topologies and systematization. Part 2. Six-membered rings

Abstract

The review is a follow-up of a previous article (I. Haiduc, J. Coord. Chem. (2019). DOI: 10.1080/00958972.2019.1641702), which introduced structures with five-membered nitrogen heterocycles as inverse coordination centers. This review presents a panorama of organic six-membered nitrogen heterocycles acting as center cores in inverse coordination metal complexes and covers pyrazine, pyrimidine, pyridazine, triazine, tetrazine, pyridine, polypyridines, piperidine, diazabicyclooctane (DABCO) and urotropine (hexamethylenetetramine) playing such a role.

KEYWORDS:

• Inverse coordination
• nitrogen heterocycles
• pyrazine
• pyrimidine
• pyridazine
• triazine
• tetrazine
• pyridine
• polypyridines
• piperidine
• diazabicyclooctane
• urotropine