Nitrogenous End Group Of Phosphorus Nitriles Ring Ligand Self-assembly Research

Recently, remarkable progress has been made in the area of molecularinorganic-organic hybrid compounds. The synthesis and characterization of infiniteone-, two-, and three-dimensional structures have been an area of rapid growth. Inthesis, a series of novel double and multi-armed 1, 3, 4-oxadiazole,3-(2-pyridyl)-pyrazole and pyridine groups containing cyclotriphosphazene ligands,and the coordination chemistry of these ligands with transition metal ions; a kind ofnitrogen groups containing ligands have been designed and synthesized. Totally 13new coordination compounds were prepared and fully characterized by IR, MS,elemental analysis and single-crystal X-ray diffraction.1. The coordination chemistry based on double and multi-armed 3-(2-pyridyl)-pyrazole containing cyclotriphosphazene ligands with inorganic Cu(â…¡) and Cd(â…¡)salts has been investigated. Three new coordination compounds were synthesizedrespectively. Their singal crystal structures were characterized and investigated.2. The coordination chemistry based on double and multi-armed 1, 3, 4-oxadiazolecontaining cyclotriphosphazene ligands with inorganic Ag(I), Hg(â…¡) and Cu(â…¡)salts has been investigated. Five new coordination compounds were synthesizedrespectively. Their singal crystal structures were characterized and investigated.3. The coordination chemistry based on double and multi-armed pyridine groupcontaining cyclotriphosphazene ligands with Cu(â…¡), Cd(â…¡) and Co(â…¡) salts hasbeen investigated. Five new coordination compounds were synthesized. Theirsingal crystal structures were characterized and investigated.The results reported herein demonstrate that the use of 1, 3, 4-oxadiazole,pyrazole and pyridine groups containing cyclotriphosphazene ligands as precursors tobind metal ions and controllable self-assembly reaction are in fact a new and efficientapproach for synthesis of novel supramolecular networks with interesting chemicaland physical properties. It provides a promising and convenient approach to access tothe multifunctional materials for selective sorption, recognition, catalysis,luminescence and magnets .