Chiral macrocyclic lanthanide complexes derived from (R)-2,2′-diamino-1,1′-binaphthyl: X-ray crystal structure and luminescence studies

Imine- and Amine-Type Macrocycles Derived from Chiral Diamines and Aromatic Dialdehydes

The condensation of aromatic dialdehydes with chiral diamines, such as 1,2-trans-diaminocyclohexane, leads to various enantiopure or meso-type macrocyclic Schiff bases, including [2 + 2], [3 + 3], [4 + 4], [6 + 6] and [8 + 8] condensation products. Unlike most cases of macrocycle synthesis, the [3 + 3] macrocycles of this type are sometimes obtained in high yields by direct condensation without a metal template. Macrocycles of other sizes from this family can often be selectively obtained in high yields by a suitable choice of metal template, solvent, or chirality of the building blocks. In particular, the application of a cadmium(II) template results in the expansion of the [2 + 2] macrocycles into giant [6 + 6] and [8 + 8] macrocycles. These imine macrocycles can be reduced to the corresponding macrocyclic amines which can act as hosts for the binding of multiple cations or multiple anions.

Lanthanide complexes with 3,4,5-triethoxybenzoic acid and 1,10-phenanthroline: synthesis, crystal structures, thermal decomposition mechanism and phase transformation kinetics

In the temperature range of 280 to 350 K, there is a solid-to-solid phase transition for each complex, which is further evidenced by four thermal circulating processes with the scanning rate of 10 K min⁻¹.

Chirality delivery from a chiral copper(II) nucleotide complex molecule to its supramolecular architecture

Chirality of a nucleotide-Cu(II) complex molecule, [CuNa(GMP)(HGMP)(H(2)O)(7)]·6(H(2)O)·CH(3)OH (GMP = guanosine 5'-monophosphate), is delivered to the three-dimensional supramolecular architecture by hydrogen bonding. Liquid- and solid-state circular dichroism (CD) spectroscopy are used to analyse the molecular and supramolecular chirality.