Metal‐Terpyridine Complexes in Catalytic Application – A Spotlight on the Last Decade

Abstract

2,2′:6′,2′′‐Terpyridine (tpy) and its derivatives represent highly versatile ligands for the complexation of transition metal ions. Today, such complexes are employed in a highly diverse fashion – including inter alia materials science, opto‐electronics, pharmacy or catalysis. Concerning the latter one, a vast development has led to new or improved applications in both “conventional” organic chemistry (i. e., catalysis of functional‐group interconversions, CH‐activation or cross‐coupling reactions) as well as energy‐related applications (e. g., CO2 reduction, artificial photosynthesis, dye degradation). In this respect, not only homogeneous catalysts (i. e., molecular complexes) but also heterogeneous and recyclable ones have moved to the focus of interest. These heterogeneous structures include 1D metallopolymers, metal‐organic frameworks (MOFs), organic‐inorganic hybrids and bio‐inspired catalysts. We gave a first overview on this topic already in 2011; in here, the methods and implementations established within the last decade as well as relevant contributions from earlier works are presented and discussed.

In-Depth Studies of Ground- and Excited-State Properties of Re(I) Carbonyl Complexes Bearing 2,2′:6′,2″-Terpyridine and 2,6-Bis(pyrazin-2-yl)pyridine Coupled with π-Conjugated Aryl Chromophores

“…Transition-metal complexes with 2,2′:6′,2″-terpyridines and their structural analogues have been receiving widespread attention from scientists due to their optical, electrochemical, catalytic, and medicinal properties, making these compounds appealing for potential applications in biological imaging, , catalysis, − and organic light-emitting devices. − …”

From Mechanically Interlocked Structures to Host–Guest Chemistry Based on Twisted Dimeric Architectures by Adjusting Space Constraints

“…2,2':6',2''-terpyridine (tpy) derivatives have been widely used to construct numerous novel supramolecular structures [54][55][56][57][58][59] with special functions, including catalysis, 60,61 medicine, 62 sensing, 63,64 smart materials, 65,66 and optoelectronic devices. [67][68][69] However, the octahedral coordination geometry of the tpy-M(II)-tpy complex can cause significant steric hindrance, which limits the application in the formation of mechanically interlocked structures based on coordination-directed instead of templating.…”

Fine-Tuning Metal and Ligand-Centered Redox Potentials of Homoleptic Bis-Terpyridine Complexes with 4′-Aryl Substituents

“…Terpyridine ( terpy , 2,2′:6′,2″-terpyridine) ligands have been widely utilized as platforms for transition-metal complexes, because of their versatility in controlling the electronic and steric properties of metal complexes and have found numerous applications in fields such as catalysis (e.g., electrocatalytic proton, CO 2 , and oxygen reduction), − photochemistry, − and supramolecular assemblies. − Fontecave, Slattery, and Sjödin have synthesized numerous bis-terpy compounds that incorporate functional groups with a variety of π-acidities directly onto the terpyridine ligand in order to investigate their impact on the electrochemical and other properties of these homoleptic bis-terpyridine complexes of the first-row transition metals of cobalt, iron, and manganese (Figure ). ,− …”