Syntheses, crystal structures, and properties of optically active Lu(III) and Yb(III) complexes of N,N′-bis(2-hydroxybenzyl)-N,N′-bis(2-pyridylmethyl)-R-1,2-propanediamine with chloride or thiocyanate

Yamada, Yasunori; Koori, Daishin; Oshikawa, Yuuki

doi:10.1080/00958972.2016.1232807

Cited by 7 publications

(10 citation statements)

References 35 publications

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“…Molecules of I – VI adopt a distorted PBP geometry, as exemplified in Figure for complex V . A similar arrangement of the donor atoms has also been reported by Yamada et al for [Ln(bbppn)X], with Ln = Lu 3+ and Yb 3+ and X = Cl – and SCN – , by Liu et al for [Ln(bbpen)X], with Ln = Dy 3+ and Y 3+ , and by Jiang et al for [Dy(bbpen-Me)X]. In the last two cases, X = Cl – and Br – .…”

Section: Resultssupporting

confidence: 80%

“…The LnCl 3 ·6H 2 O starting materials (Ln = Tb 3+ , Eu 3+ , and Gd 3+ ) were dissolved in methanol and allowed to react under N 2 with H 2 bbpen or H 2 bbppn in the presence of a stoichiometric amount of trimethylamine; the procedure was adapted from that described by Yamada and co-workers for other Ln 3+ ions . Single crystals suitable for X-ray diffraction (XRD) analysis were grown from the mother liquor or from dcm solutions upon slow liquid or vapor diffusion with diethyl ether, tetrahydrofuran, or glyme.…”

Section: Methodsmentioning

confidence: 99%

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

et al. 2021

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Seven-coordinate, pentagonal-bipyramidal (PBP) complexes [Ln(bbpen)Cl] and [Ln(bbppn)Cl], in which Ln = Tb 3+ (products I and II), Eu 3+ (III and IV), and Gd 3+ (V and VI), bbpen 2− = N,N'-bis(2-oxidobenzyl)-N,N'bis(pyridin-2-ylmethyl)ethylenediamine, and bbppnpropanediamine, were synthesized and characterized by single-crystal X-ray diffraction analysis, alternating current magnetic susceptibility measurements, and photoluminescence (steady-state and time-resolved) spectroscopy.Under a static magnetic field of 0.1 T, the Tb 3+ complexes I and II revealed single-ion magnet (SIM) behavior. Also, upon excitation at 320 nm at 300 K, I and II presented very high absolute emission quantum yields (0.90 ± 0.09 and 0.92 ± 0.09 respectively), while the corresponding Eu 3+ complexes III and IV showed no photoluminescence.Detailed theoretical calculations on the intramolecular energy transfer (IET) rates for the Tb 3+ products indicated that both excited singlet and triplet ligand states contribute efficiently to the overall emission performance. The

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Section: Resultssupporting

confidence: 80%

Section: Methodsmentioning

confidence: 99%

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

et al. 2021

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“…In recent years, much attention has been devoted to the synthesis and characterization of molecule-based materials with linkers (cyanide and thiocyanide) or chelating ligands (β-diketonates) showing various properties such as magnetism 1 and luminescence. 2 Especially, multifunctional materials with two or more physical properties have been broadly investigated which includes photo-magnetic, 3 magneto-luminescent 4 and humidity sensitive materials. 5 The β-diketonate hybrid complexes are one of the longest explored class of chelating ligands due to their ability to stabilize the crystal framework which has found practical application in the design of technological devices.…”

Section: Introductionmentioning

confidence: 99%

Neodymium β-diketonate showing slow magnetic relaxation and acting as a ratiometric thermometer based on near-infrared emission

et al. 2019

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Self-assembly of b-diketonate (Htta ¼ thenoyl(trifluoro)acetone) and 4,4 0 -azopyridine (Azo-py) with neodymium(III) ions in the presence of methanol resulted in the formation of mononuclear complex [Nd III (TTA) 3 (MeOH) 2 ]$0.5Azo-py (A) in which two asymmetric units are linked by Azo-py through hydrogen bonding via methanol. A reveals near-infrared emission (NIR) centred at about 895 and 1056 nm, in the 10-370 K temperature range, originating from the two emissive transitions on Nd(III) from 4 F 3/2 to 4 I 9/2 and 4 I 11/2 levels, respectively. Furthermore, the NIR luminescence intensity of A at room temperature augments two times upon thermal elimination of one coordinated methanol molecule. The thermally activated A exhibits single centre ratiometric thermometer behaviour in a wide temperature range from 10 to 300 K. Moreover, fluorescence properties of A were compared to another mononuclear complex [Nd III (TTA) 3 (4-OHpy)(H 2 O)] (B). Assembly A also exhibits field-induced slow magnetic relaxation properties with an energy barrier of DE/k B ¼ 19.7(7) K and an attempt time of relaxation, s 0 ¼ 3.7(8) Â 10 À7 s for fresh sample A, and DE/k B ¼ 27.3 K and s 0 ¼ 8.5(0) Â 10 À8 for assembly A after thermal treatment at 370 K.

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“…Examples of mononuclear lanthanide(III) complexes with bbpen 2and related ligands appear in the literature (Molloy et al, 2017;Liu et al, 2016;Yamada et al, 2016;Gregó rio et al, 2015;Qin et al, 2014;Yamada et al, 2010;Morss & Rogers, 1997). Binuclear structures with these hexadentate ligands have been reported by Chatterton et al 2005, and by Setyawati et al (2000).…”

Section: Database Surveymentioning

confidence: 92%

Crystal structures of binuclear complexes of gadolinium(III) and dysprosium(III) with oxalate bridges and chelating N,N′-bis(2-oxidobenzyl)-N,N′-bis(pyridin-2-ylmethyl)ethylenediamine (bbpen²⁻)

et al. 2019

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The reaction between mononuclear [Ln(bbpen)Cl] [Ln = Gd or Dy; H2bbpen = N,N′-bis(2-hydroxybenzyl)-N,N′-bis(pyridin-2-ylmethyl)ethylenediamine, C28H30N4O2] and potassium oxalate monohydrate in water/methanol produced the solvated centrosymmetric isostructural binuclear (μ-oxalato)bis{[N,N′-bis(2-oxidobenzyl-κO)-N,N′-bis(pyridin-2-ylmethyl-κN)ethylenediamine-κ2 N,N′]dilanthanide(III)}–methanol–water (1/4/4) complexes, [Ln 2(C28H28N4O2)2(C2O4)]·4CH3OH·4H2O, with lanthanide(III) = gadolinium(III) (Ln = Gd) and dysprosium(III) (Ln = Dy), in high yields (ca 70%) directly from the reaction mixtures. In both complexes, the lanthanide ion is eight-coordinate and adopts a distorted square-antiprismatic coordination environment. The triclinic (P\overline{1}) unit cell contains one dimeric unit together with four water and four methanol molecules; in the final structural model, two of each type of solvating molecule refine well. In each lanthanide(III) dimeric molecule, the medium-strength O...H—O hydrogen-bonding pattern involves four oxygen atoms, two of them from the phenolate groups that are `bridged' by one water and one methanol molecule. These interactions seem to contribute to the stabilization of the relatively compact shape of the dimer. Electron densities associated with an additional water and methanol molecule were removed with the SQUEEZE procedure in PLATON [Spek (2015). Acta Cryst. C71, 9–18]. These two new compounds are of interest with respect to magnetic properties.

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Syntheses, crystal structures, and properties of optically active Lu(III) and Yb(III) complexes of N,N′-bis(2-hydroxybenzyl)-N,N′-bis(2-pyridylmethyl)-R-1,2-propanediamine with chloride or thiocyanate

Cited by 7 publications

References 35 publications

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

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

Neodymium β-diketonate showing slow magnetic relaxation and acting as a ratiometric thermometer based on near-infrared emission

Crystal structures of binuclear complexes of gadolinium(III) and dysprosium(III) with oxalate bridges and chelating N,N′-bis(2-oxidobenzyl)-N,N′-bis(pyridin-2-ylmethyl)ethylenediamine (bbpen²⁻)

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Syntheses, crystal structures, and properties of optically active Lu(III) and Yb(III) complexes of N,N′-bis(2-hydroxybenzyl)-N,N′-bis(2-pyridylmethyl)-R-1,2-propanediamine with chloride or thiocyanate

Cited by 7 publications

References 35 publications

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

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

Neodymium β-diketonate showing slow magnetic relaxation and acting as a ratiometric thermometer based on near-infrared emission

Crystal structures of binuclear complexes of gadolinium(III) and dysprosium(III) with oxalate bridges and chelating N,N′-bis(2-oxidobenzyl)-N,N′-bis(pyridin-2-ylmethyl)ethylenediamine (bbpen2−)

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

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

Crystal structures of binuclear complexes of gadolinium(III) and dysprosium(III) with oxalate bridges and chelating N,N′-bis(2-oxidobenzyl)-N,N′-bis(pyridin-2-ylmethyl)ethylenediamine (bbpen²⁻)