Combining Coordination and Hydrogen Bonds to Develop Discrete Supramolecular Metalla-Assemblies

Bruno Therrien

doi:10.3390/chemistry2020034

Abstract

In Nature, metal ions play critical roles at different levels, and they are often found in proteins. Therefore, metal ions are naturally incorporated in hydrogen-bonded systems. In addition, the combination of metal coordination and hydrogen bonds have been used extensively to develop supramolecular materials. However, despite this win-win combination between coordination and hydrogen bonds in many supramolecular systems, the same combination remains scarce in the field of coordination-driven self-assemblies. Indeed, as illustrated in this mini-review, only a few discrete supramolecular metalla-assemblies combining coordination and hydrogen bonds can be found in the literature, but that figure might change rapidly.

Highlights

IntroductionThe preparation have been thethe focus of preparation and and characterization characterizationofofdiscrete discretemetal-based metal-basedassemblies assemblies have been focus several research groups
These hybrid self-assembled assembled systems involving coordination chemistry and hydrogen-bonded interactions form systems involving coordination chemistry and hydrogen-bonded interactions to form discrete to entities discrete entities are presented and discussed in this short review, showing the great potential of are presented and discussed in this short review, showing the great potential of combining combining coordination andbonds hydrogen bondsnew to develop new supramolecular metalla-assemblies
Several supramolecular capsules built by a combination of two functionalized C2 symmetrical calix[4]arene cavitands have been synthesized by Yamanaka and his coworkers [60,61,62]

Summary

Introduction

The preparation have been thethe focus of preparation and and characterization characterizationofofdiscrete discretemetal-based metal-basedassemblies assemblies have been focus several research groups. Most examples are limited bonds to form discrete supramolecular metalla-assemblies remains scarce. Most examples are limited to cyclic and planar entities (one and two dimensions), and only recently, systems showing cavities to cyclic and planar entities (one and two dimensions), and only recently, systems showing cavities and and cage-like structures dimensions) have appeared in the literature These hybrid self-assembled assembled systems involving coordination chemistry and hydrogen-bonded interactions form systems involving coordination chemistry and hydrogen-bonded interactions to form discrete to entities discrete entities are presented and discussed in this short review, showing the great potential of are presented and discussed in this short review, showing the great potential of combining combining coordination andbonds hydrogen bondsnew to develop new supramolecular metalla-assemblies.

Planar and Macrocyclic Assemblies Exploiting Coordination and Hydrogen

Dinuclear

Cage-Like Assemblies Exploiting Coordination and Hydrogen Bonds

Hybrid

Conclusions