New Yttrium and Europium(+3) Alkoxides Bearing Thiophene Units: Syntheses, Crystal Structure Determinations and Physico‐Chemical Properties

Veith, Michael; Belot, Céline; Hüch, Volker

doi:10.1002/ejic.201101089

Cited by 6 publications

(2 citation statements)

References 76 publications

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“…Bond et.al. pointed out that E (Eu 3+/2+ ) of organometallic Eu(III) complexes depended on the kind of constituting ligands and solvent molecules, and such a dependence can be seen in several reports ,. The irreversibility of the first reduction wave of the Eu(III) complexes could be related to the distribution of the newly occupied MOs at the first reduction.…”

Section: Resultssupporting

confidence: 83%

Electrogenerated Chemiluminescence and Electronic States of Several Organometallic Eu(III) and Tb(III) Complexes: Effects of the Ligands

et al. 2019

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We report the electrochemical properties, and electrogenerated chemiluminescence (ECL) of eight different organometallic complexes of Eu(III) and Tb(III), Eu(dbm)3phen, Eu(dbm)3bath, Eu(fod)3phen, Eu(tta)3phen, Tb(acac)3phen, Tb(acac)3bath, Tb(fod)3phen, and Tb(tmhd)3bpy in acetonitrile, where phen, bath, and bpy are 1, 10‐phenanthroline, bathophenanthroline, 2,2′‐bipyridyl, respectively, and the anionic ligands, acac−, dbm−, fod−, and tta− are the enolate forms of acetylacetone, dibenzoylmethanate, 6,6,7,7,8,8,8‐heptafluoro‐2,2‐dimethyl‐3,5‐octanedione, and thenoyltrifluoroacetone, respectively. The electronic states of the neutral and some charged states of the complexes were clarified with density functional theory calculations. The ECL spectra were recorded by using S2O82− as a coreactant, and for all complexes, sharp ECL spectra, which are attributable to the f‐f transitions, were observed. On the potential‐dependent ECL spectra, broad ECLs, which were originated from the ligands, were also detected. Based on the ECL behavior and the electronic states, the mechanisms of the intraconfigurational ECL were discussed.

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Section: Resultssupporting

confidence: 83%

Electrogenerated Chemiluminescence and Electronic States of Several Organometallic Eu(III) and Tb(III) Complexes: Effects of the Ligands

et al. 2019

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“…Coordination compounds of trivalent rare earth ions remain an area of intense investigation, greatly owing to the characteristic luminescence and magnetic properties of the 4f metals. − While excitation of the valence electrons is parity forbidden, organic ligands are commonly utilized to serve as antennae for ligand sensitized metal-based emission . These properties have given rise to a breadth of applications for luminescent lanthanide materials including optical signal amplifiers, − biochemical sensors, − and other electroluminescent devices .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of an Isomorphous Lanthanide-Thiophenemonocarboxylate Series (Ln = La–Lu, except Pm) Amenable to Color Tuning

Batrice

Adcock

Cantos

et al. 2017

Crystal Growth & Design

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A series of 14 lanthanide compounds bearing 2-thiophenecarboxylate (TC) have been prepared under aqueous conditions and structurally characterized. Single crystal X-ray diffraction studies reveal a full isomorphous series across the 4f block of the general formula [(Ln(TC)3(H2O)2)·(HPy·TC)] n , (Ln = La (La-1) – Lu (Lu-1), excluding Pm), with observable contraction of the cell volume and average metal–oxygen bond distances occurring when moving from lanthanum to lutetium. The 8-coordinate Ln metal centers are bound to two water molecules as well as six oxygen atoms from one bidentate and four bridging TC units that link LnO8 structural units into 1D chains. One lattice stabilizing pyridinium and one outer coordination sphere TC anion are present per formula unit. Reaction optimization provided moderate to high yields of the title products; a lanthanum byproduct [La(TC)3(HTC)2] n (La-2) was formed by performing the reaction at reduced temperature, or alternatively, successive grinding of La-1 in ethanol resulted in partial conversion to La-2. Solid-state fluorescence studies show ligand sensitized metal-based emission for Eu(III), Tb(III), and Dy(III) in the visible region, and Nd(III) and Er(III) in the NIR. Color tuning was easily achieved by varying europium:terbium metal ratios in the reaction mixtures.

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Simple and Efficient “One‐Pot” Synthesis of Diphenylaryl (Heteroaryl) Methanols from Benzene

et al. 2020

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Diphenylaryl (heteroaryl) methanols are valuable compounds, widely used in organic synthesis as tailor‐made protective groups, in medicinal chemistry, in crystal engineering, and in many other fields. A simple and efficient “one‐pot” method for the synthesis of diphenylaryl (heteroaryl) methanols from benzene was developed using the known reaction of benzene with CCl4•AlCl3. This approach appeared fruitful when the reaction was performed uring CCl4 as a solvent. This method allows the selective synthesis of Ph2CCl2 in good yield as well as triaryl (heteroaryl) methanols,

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New Yttrium and Europium(+3) Alkoxides Bearing Thiophene Units: Syntheses, Crystal Structure Determinations and Physico‐Chemical Properties

Abstract: International audienc

Cited by 6 publications

References 76 publications

Electrogenerated Chemiluminescence and Electronic States of Several Organometallic Eu(III) and Tb(III) Complexes: Effects of the Ligands

Electrogenerated Chemiluminescence and Electronic States of Several Organometallic Eu(III) and Tb(III) Complexes: Effects of the Ligands

Synthesis and Characterization of an Isomorphous Lanthanide-Thiophenemonocarboxylate Series (Ln = La–Lu, except Pm) Amenable to Color Tuning

Simple and Efficient “One‐Pot” Synthesis of Diphenylaryl (Heteroaryl) Methanols from Benzene

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