Heterometallic Molecular Architectures Based on Fluorinated β-Diketone Ligands

Abstract

This review summarizes the data on the synthesis of coordination compounds containing two or more different metal ions based on fluorinated β-diketonates. Heterometallic systems are of high interest in terms of their potential use in catalysis, medicine and diagnostics, as well as in the development of effective sensor devices and functional materials. Having a rich history in coordination chemistry, fluorinated β-diketones are well-known ligands generating a wide variety of heterometallic complexes. In this context, we focused on both the synthetic approaches to β-dicarbonyl ligands with additional coordination centers and their possible transformations in complexation reactions. The review describes bi- and polynuclear structures in which β-diketones are the key building blocks in the formation of a heterometallic framework, including the examples of both homo- and heteroleptic complexes.

Exploring Ln(III)-Ion-Based Luminescent Species as Down-Shifters for Photovoltaic Solar Cells

“…The energies of the S 1 singlet and T 1 triplet states of the ligands that we have used in this work are shown in Table S1 of the Supplementary Material (Table S1) . In the case of fluorine-containing diketonates, recent reviews can be mentioned [ 22 , 23 ].…”

Novel Biologically Active N-Substituted Benzimidazole Derived Schiff Bases: Design, Synthesis, and Biological Evaluation

“…Schiff bases can be easily synthesized by a condensation reaction of different amino substituted compounds with versatile aldehydes or ketones [7]. Besides the fact that Schiff bases are important building blocks in medicinal chemistry due to their broad spectrum of biological activity [8][9][10][11][12], they have also been used in coordination chemistry [13][14][15], in analytical chemistry [16], as dyes [17], as optical chemosensors [18][19][20], as polymers [21], in catalysis [22], in metallurgy and refining of metals, and as fungicidal and agrochemical compounds. Additionally, the interest of numerous scientists is focused on evaluating Schiff bases as ligands for transition metals displaying diverse biological activities, such as anticancer [23,24], antimicrobial [25,26], and antifungal activities [27].…”

Highly Luminescent Europium(III) Complexes in Solution and PMMA-Doped Films for Bright Red Electroluminescent Devices

“…The β-diketones ligands are widely investigated and known to sensitize the emission of lanthanide ions very effectively since they show a very strong π,π* absorption band in the UV region with suitable excited state energy [8,9]. Generally, the Eu(III) ion in combination with β-diketone ligands in a 1:3 molar ratio constructs an aquo-complex [Eu(β-diketone) 3 (H 2 O) 2 ].…”

“…Generally, the Eu(III) ion in combination with β-diketone ligands in a 1:3 molar ratio constructs an aquo-complex [Eu(β-diketone) 3 (H 2 O) 2 ]. The two coordinated water molecules may be replaced either by Molecules 2023, 28, 4371 2 of 15 a fourth diketonate anion or by mono-/polydentate co-ligands that may be functionalized so as to provide suitable light-harvesting and a subsequent energy transfer onto the Eu(III) ion [8][9][10]. With a judicious choice of co-ligands, the photophysical properties of the resulting ternary Eu complex can be effectively tuned.…”