Ligation of Bipyridyl Ligands to Metal 8‐Hydroxyquinolinates – Synthesis, Crystal Structures, and TDDFT Study

Abstract

Full metal bonding: The reduction of a six‐coordinate, mononuclear Werner‐type iron(II) complex (see scheme) resulted in the isolation of a compound with an extraordinarily rare, unsupported Fe–Fe bond having an experimental Fe–Fe distance of 2.6869(6) Å and a calculated bond order of 0.5.

Elucidating the Solution-Phase Structure and Behavior of 8-Hydroxyquinoline Zinc in DMSO

“…Additionally, in the presence of suitable donor ligands, Zn­(8HQ) 2 is known to bind one or two ligands in the solid state, either in cis or trans configurations (Figure ). , …”

“…24 Additionally, in the presence of suitable donor ligands, Zn(8HQ) 2 is known to bind one or two ligands in the solid state, either in cis or trans configurations (Figure 2). 25,26 Despite the many studies of Zn(8HQ) 2 and related compounds mentioned above, the photochemistry and relaxation dynamics of these compounds are not fully understood, particularly in solution. Here we apply a variety of approaches to elucidate the structure of Zn(8HQ) 2 in both ground and excited states, in DMSO solution.…”