Synthesis and Properties of Macrobicyclic Cryptates Incorporating Five‐ and Six‐Membered Biheteroaryl Units

Publisher Website
Google Scholar
Abstract
The socium cryptates of the macrobicyclic ligands 1–6 have been synthesized by direct macrobicyclisation or by stepwise procedures. They incorporate 2,2′‐bithiazole, 2,2′‐biimidazole, 2.2′‐bipyrimidine as well as 2,2′‐bipyridine units. Treatment of the sodium complexes with europium(III) chloride gave the corresponding EuIII cryptates. The structural and spectral properties of these compounds are described. The EuIII complexes present characteristic 1H‐NMR chemical‐shift features. Their luminescence properties are described.