Asymmetric induction in homochiral MOFs: from interweaving double helices to single helices

Abstract

Two three-dimensional (3D) homochiral metal-organic frameworks, integrating double helical chains based on enantiopure ligands and single helical structures braided by 4,4'-bipyridine (bipy) and cadmium clusters, have been synthesized successfully, as a result of complete asymmetric induction between the two types of helix.

A Pair of Rare Three-Dimensional Chiral Polyoxometalate-Based Metal–Organic Framework Enantiomers Featuring Superior Performance as the Anode of Lithium-Ion Battery

“…Polyoxometalates (POMs), as a special style of early transition metal clusters, which are usually composed of W, Mo, and V ions in their highest oxidization states and are multielectron redox active systems, have drawn intense concern due to their intriguing practical applications such as catalysis, ion exchange, electrochemistry, and so on. − Their chirality, widely found in nature, has drawn intense concern due to not only their fascinating structural architectures but also extensive applications such as asymmetric catalysis, chiral recognition, and nonlinear optical properties. − In light of the advantages of chirality and POMs, a great deal of effort is concentrating on the syntheses of polyoxometalate-based chiral hybrid compounds, which can integrate the functional properties of polyoxometalates and chirality. As a result of the outstanding contributions from the groups of Pope, Toshihiro, and Wang and other groups, several POM-based chiral hybrids have been obtained, most of which are molecular complexes and layered coordination polymers. − However, the reasonable preparation of a chiral three-dimensional (3D) POM-based MOF complex remains a great challenge.…”

Chiral Zinc Complexes Used as Fluorescent Sensor for Natural Amino Acids

“…The effective sense of amino acids can be achieved by constructing a metal complex with special structure through reasonable design. The metal ions of these complexes can serve as active sites for amino acids, and the unique spatial structure of the complexes can limit it interact with special amino acids through supramolecular interaction These unique characteristics make it possible to sense amino acids.…”

Catenation of Homochiral Metal–Organic Nanocages or Nanotubes

“…Herein we describe a homochiral compound, {Zn 3 [( R )-TMTA] 2 [(1 R ,2 R )-cyclohexanediamine] 3 } n ( 1 ; TMTA = 1,3,5-trimethyl-1,3,5-triazine), composed of catenated triangular-prism-like cages based on a presynthesized enantiopure ( R )-H 3 TMTA ligand (Scheme ), in which 0D → 3D catenation is achieved by interlocking the cages. By using different organic amines as the structure-directing agent, another homochiral compound, {Zn 3 [( R )-TMTA] 2 (cyclohexylamine) 6 } n ( 2 ), with 1D → 3D catenation based on nanotubes is also presented.…”