The evolution of β-diketone or β-diketophenol ligands and related complexes

Crystal structure of (Z)-1-(1,5-dimethyl-1H-pyrazol-3-yl)-3-hydroxy-3-(p-toly)prop-2-en-1-one, C15H16N2O2

“…β-Ketoenol-functionalized heterocycles, as one of the classical chelating ligands, play a signi cant role in coordination chemistry for over a century [1,2], several of these ligands have been reviewed [3,4]. Complex formation of such systems with transition metals have additional features, including unusual optical, magnetic, photoactive, catalytic and electrochemical properties.…”

Syntheses, structures and magnetic properties of tetranuclear and trinuclear nickel(II) complexes with β-diketone-functionalized pyridinecarboxylate ligand

“…The pyridine containing b-diketones have been known in organic chemistry for a long time [8], but their uses to date in coordination chemistry have been very few [9][10][11][12][13][14]. Recently, metal complexes of functionalized b-diketones ligands have been well reviewed by Tamburini and co-workers [15], some polynuclear complexes and coordination polymers with bis-b-diketones have been reported [16][17][18][19][20][21][22][23][24]. However, among the several paramagnetic transition metal centers, the exploration of structure and magnetic properties of octahedrally coordinated polynuclear Ni(II) complexes with b-diketone-functionalized pyridinecarboxylate ligands still remains relatively limited.…”

Designed Topology and Site‐Selective Metal Composition in Tetranuclear [MM′⋅⋅⋅M′M] Linear Complexes

“…[19] The use of b-diketone groups as part of ligands has been used also by other groups for the assembly of a variety of coordination complexes. [20][21][22][23][24] We have recently directed our attention towards ligands capable of keeping metals separate into two semi-independent groups within a molecule, since these types of assemblies have been proposed as good candidates to become two-qbit quantum gates for quantum computing. [25] An attractive ligand for this purpose is H 4 L (Scheme 1, top), which exhibits two separate pairs of coordination pockets designed to assemble chains of four metals as two independent dimers.…”