Rhenium‐Carbonyl‐Based Supramolecular Coordination Complexes: Synthesis, Structure and Properties

Abstract

The facial‐Re(CO)3 core based supramolecular coordination complexes represent a unique class of functional 2D and 3D metallacycles possessing advantages such as high stability, one‐step synthesis, clean products and good solubility. Most of these metallacycles display interesting photophysical and redox properties leading to their applications in host‐guest chemistry, photo‐catalysis, biological activity and functional molecular devices. This review presents a comprehensive survey of reported Re‐based metallacycles describing the development of synthetic methodologies, properties, applications and future prospects.

Recent progress on NHC-stabilized early transition metal (group 3–7) complexes: Synthesis and applications

“…potent cytotoxic activities towards cancer cells. 204,205,206 Recent examples have demonstrated the value of including a NHC ligand in these potential anticancer agents. 207 Some rhenium (I) carbonyl NHC complexes have also been investigated with success for their antimicrobial activity.…”

Photochemistry of P,N-bidentate rhenium(i) tricarbonyl complexes: reactive species generation and potential application for antibacterial photodynamic therapy

“…Fitting these data with eqn (1) allows us to obtain the apparent photoproduct formation rate constant (k app ). In addition, photodegradation quantum yields (F P ) were calculated at room temperature using eqn (2). The values of k app obtained at different temperatures and F P in different solvents are included in Table 2.…”

“…Rhenium(I) tricarbonyl diimines are attractive compounds due to their unique luminescence properties. 1,2 They are easy to prepare, very stable at room temperature, and capable of emitting light in the visible region, and their photophysical properties are modulated by the ligands used. 3,4 Owing to these advantages, they have been used in a wide range of applications as follows: as photocatalysts for CO 2 reduction, [5][6][7] as biomolecular probes for sensing different microenvironments, 8,9 as DNA or protein probes for biolabeling, 10,11 as sensitizers for Grätzeltype solar cells, 12,13 and as singlet oxygen sensitizers for photodynamic therapy (PDT), 14 among others.…”

Coordination-Driven Self-Assembly of Cyclometalated Iridium Squares Using Linear Aromatic Diisocyanides

“…The synthesis of photoactive two- and three-dimensional polynuclear metallocage assemblies has become a particular area of focus in photochemistry, owing to the unique excited-state dynamics of these systems which provide insights into excited-state energy and charge-transfer phenomena. , Some of the most well-studied and characterized complexes of this nature are ruthenium-, rhenium-, and platinum-based assemblies with polypyridyl or metalloporphyrin bridging ligands (BLs). − Platinum coordination cages have become especially popular for their use as molecular sensors, while ruthenium, rhenium, and palladium coordination cages have seen use in photocatalytic applications. − Comparatively few examples of iridium coordination assemblies have been reported, despite the robust luminescence properties of many iridium complexes. − One factor contributing to this lack of development is the significant substitutional inertness of iridium­(III), which can necessitate high temperatures and long reaction times for the assembly of cages with iridium­(III) building blocks . However, due to the trans -effect labilization brought on by the cyclometalated aryl groups, ligand substitution chemistry on bis-cyclometalated iridium complexes can be readily achieved, and they have the potential to be versatile building blocks for luminescent supramolecular assemblies.…”