Five complexes based on a new racemic tetraoxaspiro ligand: correlation of potential coordination preferences with the structure, magnetic properties and luminescence properties

Abstract

Complexes 1–5 based on an axially chiral (R,S)-bptu ligand are obtained and investigated to give correlation of potential coordination preferences with structures. Furthermore, magnetic and luminescence properties were studied.

Five Porous Complexes Constructed from a Racemic Ligand: Synthesis, Chiral Self-Assembly, Iodine Adsorption, and Desorption Properties

“…On the other hand, chirality is a ubiquitous feature in the structures of natural products. Chiral metal complexes have attracted an extensive amount of attention in enantiomeric separation, asymmetric synthesis, and catalysis, as well as supramolecular architectures due to their ability to generate asymmetric environments. − In principle, self-assembly from metal ions and racemic ligands can lead to oligomeric or polymeric MOMs, which are homochiral via a self-recognition process or heterochiral via a self-discrimination process. − It is known that supramolecular interactions such as coordination bonds, hydrogen bonds, or π···π stacking interactions have important effects on supramolecular chiral assembly . Nonetheless, how to predict the chiral self-assembly process has not been clearly established.…”

Heterochiral or Homochiral Self‐Assembly: Mercury(II), Cadmium(II), and Spontaneous Resolution of Silver(I) Complexes Derived from a Racemic Bis(pyridyl) Ligand

“…Chiral ligands have attracted an extensively attention in chiral separation, asymmetric synthesis and catalysis, as well as supramolecular architectures due to their ability to generate an asymmetric environment . In principle, chiral ligands are employed to achieve enantio‐ or diastereoselective assembly, but a more complex and less explored situation arises when racemic ligands are used . In such systems, reactions with racemic ligands either result in homochiral complexes through a ligand self‐recognition (also known as narcissistic self‐sorting) process or heterochiral complexes through a ligand self‐discrimination (also called social self‐sorting) process .…”