Macrocyclic tetraphosphine corands and their complexes

GRAPHICAL ABSTRACT

ABSTRACT

Methodology of the stereoselective synthesis of macrocyclic tetraphosphines P₄N₂ which is based on the principles of covalent self-assembly has been developed. The transformations of macrocyclic tetraphosphines after dissolving in various organic solvents were investigated. The coordination ability of the obtained macrocycles was studied and the series of Cu(I), Au(I), Ni(II), and Pt(II) complexes was synthesized. It was demonstrated that the structure of metal complexes depends on the macrocycle size, initial relative configuration of phosphorus atoms in macrocycle, stability of macrocycles in solutions (stereoisomerization or transformation into medium cycles) as well as predominant configuration of the metal center.

KEYWORDS:

• Macrocyclic tetraphosphines
• complexes
• stereoselectivity

Funding

The work was financially supported by the research grant of Russian Foundation for Basic Research (15-43-02292).