Wydział Chemii

Jarosław Mazurek

Jerzy Lisowski

2003

Polyhedron

22

2877-2883

10.1016/S0277-5387(03)00406-6

Naukowa

Angielski

Artykuł

The enantiopure complexes [LnL]Cl₃·nH₂O (Ln=La³⁺, Ce³⁺ and Eu³⁺) of the new chiral macrocycle derived from (1R,2R)-1,2-diphenylethylenediamine and 2,6-diformylpyridine have been synthesised. The complexes have been characterised by NMR spectroscopy and mass spectrometry. The ¹H and ¹³C signal assignment has been based on COSY, NOESY and HMQC measurements. The X-ray crystal structure of the [CeL]Cl₃·4H₂O complex has been determined. The cerium(III) ion is coordinated by six nitrogen atoms of the macrocyclic ligand and three chloride anions. The macrocycle in this complex adopts a relatively flat, twist-bent conformation. The enantiopure La³⁺, Ce³⁺ and Eu³⁺ complexes of the new chiral macrocycle derived from (1R,2R)-1,2-diphenylethylenediamine and 2,6-diformylpyridine have been obtained in template condensation. The complexes have been characterised by 2D NMR spectroscopy and mass spectrometry. The X-ray crystal structure of the cerium(III) complex shows the Ce(III) ion coordinated by six nitrogen atoms of the macrocyclic ligand and three chloride anions. The macrocycle in this complex adopts a relatively flat, twist-bent conformation.

Macrocycles, Lanthanide complexes, Chiral complexes, NMR

https://doi.org/10.1016/S0277-5387(03)00406-6

http://www.elsevier.com