The N-donor stabilised cyclotriphosphazene hexacation [P3N3(DMAP)6]6+

Area of Science:

• * Inorganic Chemistry
• * Supramolecular Chemistry
• * Crystal Engineering

Background:

• * Cyclotriphosphazenes are inorganic heterocycles with a P3N3 ring.
• * 4-(dimethylamino)pyridine (DMAP) is a versatile organic ligand.
• * Host-guest chemistry explores the encapsulation of guest molecules within host structures.

Purpose of the Study:

• * To investigate the reaction product of hexachlorocyclotriphosphazene with DMAP.
• * To characterize the crystal structure and host-guest properties of the resulting compound.
• * To explore the potential of cyclotriphosphazene derivatives in supramolecular assembly.

Main Methods:

• * Synthesis of cyclotriphosphazene derivative via reaction with DMAP.
• * Crystallization from superheated chloroform.
• * Single-crystal X-ray diffraction analysis to determine the structure.

Main Results:

• * Formation of [P(3)N(3)(DMAP)(6)]Cl(6).19CHCl(3) crystals.
• * The [P(3)N(3)(DMAP)(6)](6+) cation exhibits a unique basket-type structure.
• * Five chloride ions are hosted within the cavities of the cation via tetradentate ortho-H-donor interactions.

Conclusions:

• * The reaction yields a novel cyclotriphosphazene-DMAP complex with significant void space.
• * The observed chloride ion encapsulation demonstrates the potential of this system for host-guest chemistry.
• * This study highlights the utility of cyclotriphosphazenes in designing supramolecular architectures.