On the Structural Features of Substituted Lanthanide Benzoates

Abstract

An analysis of the structures of lanthanide benzoates, based on the Cambridge Structural Database (CSD) data, was conducted. In particular, the analysis of the Ln-O bond length was carried out, and the role of different substituents [a] 2321 Figure 2. Schematic representation of the energy transferred in the event of the manifestation of (a) Förster and (b) Dexter mechanisms.

Synthesis and photophysical properties of rare earth (La, Nd, Gd, Y, Ho) complexes with silanediamido ligands bearing a chelating phenylbenzothiazole chromophore

“…Chemists use close chemical properties and cationic radii of lanthanides to replace lanthanide cations, when necessary, with only minor changes in the geometry of the coordination sphere. 2,[5][6][7][8][9][10] The energies of the excited state of lanthanides cover almost the whole visible and near-infrared (NIR) region, thus leading to various possible applications of the luminescent materials based on the lanthanide cations, from Nd lasers 11,12 and optic fibers having a transparent telecommunication window in the Er 3+ emission region 13 to chemical sensors and bioprobes. 2,14,15 Lanthanide cations have rather low absorptions and, as a consequence, low excitation efficiency.…”

Seven-Coordinate Tb3+ Complexes with 90% Quantum Yields: High-Performance Examples of Combined Singlet- and Triplet-to-Tb3+ Energy-Transfer Pathways

“…[34][35][36][37][38][39][40][41][42][43][44] Improvement of the absorption/energy transfer processes to give luminescent materials with long decay times and high absolute emission quantum yields (the ratio between the number of emitted photons by the lanthanide and the absorbed photons by the ligands, 𝑄 ) 45 is an extensively sought task, to which the design of ligands with specific coordination geometries and the use of different counterions have contributed significantly. [46][47][48][49] In this context, we recently reported the preparation of two eightcoordinate Tb 3+ nitrates with the polydentate ligands N,N'-bis(2-oxidobenzyl)-N,N'-bis(pyridin-2ylmethyl)-ethylenediamine (bbpen 2− ) and N,N'-bis(2-oxidobenzyl)-N,N'-bis(pyridin-2-ylmethyl)-1,2propane-diamine (bbppn 2− ), which present significantly different 𝑄 values of ca. 0.21 and 0.67 respectively.…”

Lanthanide(iii) (Er/Ho) coordination polymers for a photocatalytic CO2 cycloaddition reaction

“…Lanthanide-polynuclear coordination compounds adopt intriguing crystal structures and have interesting magnetic, 1 luminescence, 1,2 bioactive, 3,4 and photocatalytic properties. [5][6][7][8] Recently, there have been attempts to assemble extended structures using discrete lanthanide clusters as secondary building units. 9,10 Nonetheless, identifying the effects of cluster connectivity on the behaviour, such as magnetic exchange, might be possible using 1D structures with fewer connections.…”

“…5 In this regard, aromatic carboxylic acids and their derivatives have affinity for lanthanide ions, and many Ln-complexes are typically constructed from them. 7,16 However, a scarce number of papers have thus far concentrated on alicyclic carboxylic acids as ligands. 17,18 Aminobenzoic acid derivatives are one big family of organic linkers frequently used to construct lanthanide extended structures.…”