Synthesis and structure of the calixarene-like phosph(iii)azane macrocycle [{P(μ-NtBu)}2{1,5-(NH)2C10H6}]3

Abstract

The reaction of [ClP(μ-N^tBu)]₂ with 1,5-diamino-naphthalene [1,5-(NH₂)₂C₁₀H₆] in Et₃N–thf gives the trimeric macrocycle [{P(μ-N^tBu)}₂{1,5-(NH)₂C₁₀H₆}]₃ (1); the X-ray structure of the toluene solvate 1·3toluene reveals a cone-shaped (calixarene-like) arrangement in which toluene guest molecules are trapped within the cavity.