Synthesis, Structural Characterization and Metal Inclusion Properties of 18‐, 20‐ and 22‐Membered Oxaazacyclophanes and Oxaazacalix[4]arene Analogues: Macrocyclic Amine and Schiff Base Receptors with Variable N<i>_x</i>O<i>_y</i> Donor Sets

Abstract

Abstract A series of oxaazacyclophanes and oxaazacalix[4]arene analogues with 18‐, 20‐ and 22‐membered rings have been synthesized from diamine and dialdehyde building blocks and structurally characterized by spectroscopic methods. One diamine precursor and four macrocycles have additionally been analysed by single‐crystal X‐ray diffraction. Two of the oxaazacalix[4]arene analogues were employed for metal ion complexation studies based on UV/Vis absorption spectroscopy, showing both compounds to be able to form complexes with Cu 2+ and Zn 2+ .