2-Aminoisobutyric Acid in Co(II) and Co(II)/Ln(III) Chemistry: Homometallic and Heterometallic Clusters

Sopasis, George J.; Orfanoudaki, Maria; Zarmpas, Pavlos; Philippidis, Aggelos; Siczek, Miłosz; Lis, Tadeusz; O’Brien, Jeanne E.; Milios, Constantinos J.

doi:10.1021/ic2024007

Cited by 67 publications

(24 citation statements)

References 54 publications

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“…[40] In principle, REbased luminescent materials have aroused extensive interest because of the narrow emissionl ine and highc olor purity derived from transitions inside the 4f shell of the RE 3 + ions. [41][42] The 4f shells are located inside the completely filled 5s and 5p subshells. These outer completed shells protect the 4f electrons from active interactions with the environmentand diminish the considerable influenceo fs urrounding ions on the inner forbitals.…”

Section: Photoluminescence (Pl) Propertiesmentioning

confidence: 99%

Structural Transformation from Dimerization to Tetramerization of Serine‐Decorated Rare‐Earth‐Incorporated Arsenotungstates Induced by the Usage of Rare‐Earth Salts

Liu

et al. 2017

Chemistry A European J

100

109

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Three types of serine-decorated rare- earth-containing arsenotungstate [H N(CH ) ] NaH[RE W O (H O) (Ser) (B-α-AsW O ) ]⋅30 H O (RE =Eu , Gd , Tb , Dy , Ho , Er , Tm , Yb , and Y ; 1), [H N(CH ) ] Na RE H [RE W O (H O) (OH) (Ser) (B-α-AsW O ) ]⋅n H O (RE =Tb , x=1, y=2, n=36; RE =Dy , Ho , Er , Yb , Y , x=0, y=0, n=38; RE = Tm , x=1, y=0, n=38; Ser=serine; 2), and [H N(CH ) ] Na RE H [RE W O (H O) (OH) (Ser) (B-α-AsW O ) ]⋅Cl ⋅n H O (RE =Ce , Pr , x=1, y=0, n=65; RE =Nd , Sm , x=0, y=0, n=65; RE =Eu , Gd , x=1, y=2, n=45; 3) were synthesized with the participation of the organic solubilizers dimethylamine hydrochloride and l-serine and were structurally characterized. The use of different amounts of rare-earth salts results in the structural transformation from dimerization to tetramerization of types 1-3. Type 1 is a dimeric sandwich-type assembly of a dual-Ser-participating [RE W O (H O) (Ser) ] entity sandwiched by two [B-α-AsW O ] moieties, whereas types 2 and 3 have a tetrameric square structure formed by four [B-α-AsW O ] moieties that anchor a dual/tetra- Ser-participating [RE W O (H O) (OH) (Ser) ] or [RE W O (H O) (OH) (Ser) ] core. The solid-state luminescence properties and lifetime-decay behaviors of these compounds were investigated. The chromaticity coordinates, dominant wavelengths, color purities, and correlated color temperatures were also calculated.

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Section: Photoluminescence (Pl) Propertiesmentioning

confidence: 99%

Structural Transformation from Dimerization to Tetramerization of Serine‐Decorated Rare‐Earth‐Incorporated Arsenotungstates Induced by the Usage of Rare‐Earth Salts

Liu

et al. 2017

Chemistry A European J

100

109

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“…[6,7] However, the potential rewards are significant, as there is a real possibility of control/design over the individual magnetic parameters that contribute to the overall molecular properties. [8] Furthermore, new functionality can be added, such as the combination of magnetic and optical properties, [9] or the production of catalysts or catalyst precursors with high activity and/or selectivity. [10] Previously, polydentate ligands with specific binding sites/ donor atoms, [11] linear linkers such as cyanide [12] or rigid structure-directing ligands [13] have been used to prepare heterometallic complexes.…”

Section: Dedicated To Professor David Collison On the Occasion Of Hismentioning

confidence: 99%

“…However, the potential rewards are significant, as there is a real possibility of control/design over the individual magnetic parameters that contribute to the overall molecular properties 8. Furthermore, new functionality can be added, such as the combination of magnetic and optical properties,9 or the production of catalysts or catalyst precursors with high activity and/or selectivity 10…”

mentioning

confidence: 99%

Directed Synthesis of {Mn₁₈Cu₆} Heterometallic Complexes

et al. 2013

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“…It is well-known that lanthanoid complexes exhibit attractive luminescent performances and can be applied in diverse domains, including lasers, optical devices, sensory probes, and so on, 125 which are chiefly related to the fact that the 4f electrons are shielded by the outer 5s and 5p electrons resulting in well-defined absorption and emission bands. 126 Consequently, the atomic properties of lanthanoid ions are usually maintained in the complexes. Emission band derived from the oxygen-to-metal (O → M) transitions of POM units are able to generate intramolecular energy transport from the O → M excited states to the Ln III excited energy levels, and then to sensitize the Ln emission.…”

Section: ■ Introductionmentioning

confidence: 99%

First Tungstoantimonate-Based Transition-Metal–Lanthanide Heterometallic Hybrids Functionalized by Amino Acid Ligands

Zhao

Cao

et al. 2014

Crystal Growth & Design

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By the routine aqueous solution method, a series of transitionmetal−lanthanide heterometallic tungstoantimonates [Ln(H 2 O) 8 ] 2 -[Fe 4 (H 2 O) 8 (thr) 2 ][B-β-SbW 9 O 33 ] 2 ·22H 2 O [Ln = Pr III (1), Nd III (2), Sm III (3), Eu III (4), Gd III (5), Dy III (6), Lu III (7), thr = threonine] were prepared and structurally characterized by multiple testing techniques. The common structural characteristic of 1−7 is that they are isomorphous and all consist of a [Fe 4 (H 2 O) 8 (thr) 2 (B-β-SbW 9 O 33 ) 2 ] 6− subunit with two supporting [Ln(H 2 O) 8 ] 3+ cations on both sides. It should be pointed out that two thr ligands in the [Fe 4 (H 2 O) 8 (thr) 2 (B-β-SbW 9 O 33 ) 2 ] 6− subunit substitute for two water ligands in the classical [Fe 4 (H 2 O) 10 (B-β-SbW 9 O 33 ) 2 ] 6− polyoxoanion. As far as we know, 1−7 represents the first organic−inorganic tungstoantimonate hybrids consisting of transition metal and lanthanide cations and amino acid components. The fluorescence behavior of 4 has been measured and manifests the remarkable fluorescence feature resulting from the emission signature of Eu III cations. Furthermore, the solid-state electrochemistry and electrocatalytic performances of 1 have been measured in 0.5 mol L −1 Na 2 SO 4 +H 2 SO 4 aqueous solution, and the results show that 1 illustrates comparatively apparent catalytic activities toward the BrO 3 − and H 2 O 2 reduction. The magnetic properties of 3 and 6 have been studied. ■ INTRODUCTION Polyoxometalates (POMs) represent an special family of intriguing metal−oxygen cluster compounds formed by high oxidation state early transition metals (preferably Mo, W, V, and Nb) bearing tremendous diverse structures, seductive properties, and latent applications in catalysis, magnetism, electronics, photoluminescence, pharmaceutical, and materials science. 1−9 Highly negative charge, O-enriched lacunary POMs, can act as one kind of outstanding multidentate nucleophilic candidates to coordinate to transition-metal (TM) or lanthanoid (Ln) ions to construct neoteric TM or Ln encapsulated POM aggregates with varying metal centers, alluring topological architectures and novel properties, which can also make more magnetic or catalytic components implant to the POM cluster skeletons. Therefore, the exploration and discovery of TM-or Ln-functionalized POMs have attracted considerable interest over the past few decades. Hitherto, a vast amount of TM-or Ln-substituted POMs have been sequentially discovered. 10−19 In contrast, explorations on POM-based TM−Ln heterometallic derivatives (PTLHDs) still remain less developed, although their unmatched diversities and physicochemical properties entail them to become candidates for magnetic materials or optical sensing materials. 20−22 Less work dedicated to PTLHDs mainly lies in an inescapable competing reaction between electrophilic Ln and TM cations with nucleophilic POM precursors within a system. 23 Therefore, the search and preparation of POMbased TM−Ln heterometallic materials will remain a longstanding and persisting chall...

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2-Aminoisobutyric Acid in Co(II) and Co(II)/Ln(III) Chemistry: Homometallic and Heterometallic Clusters

Cited by 67 publications

References 54 publications

Structural Transformation from Dimerization to Tetramerization of Serine‐Decorated Rare‐Earth‐Incorporated Arsenotungstates Induced by the Usage of Rare‐Earth Salts

Structural Transformation from Dimerization to Tetramerization of Serine‐Decorated Rare‐Earth‐Incorporated Arsenotungstates Induced by the Usage of Rare‐Earth Salts

Directed Synthesis of {Mn₁₈Cu₆} Heterometallic Complexes

First Tungstoantimonate-Based Transition-Metal–Lanthanide Heterometallic Hybrids Functionalized by Amino Acid Ligands

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2-Aminoisobutyric Acid in Co(II) and Co(II)/Ln(III) Chemistry: Homometallic and Heterometallic Clusters

Cited by 67 publications

References 54 publications

Structural Transformation from Dimerization to Tetramerization of Serine‐Decorated Rare‐Earth‐Incorporated Arsenotungstates Induced by the Usage of Rare‐Earth Salts

Structural Transformation from Dimerization to Tetramerization of Serine‐Decorated Rare‐Earth‐Incorporated Arsenotungstates Induced by the Usage of Rare‐Earth Salts

Directed Synthesis of {Mn18Cu6} Heterometallic Complexes

First Tungstoantimonate-Based Transition-Metal–Lanthanide Heterometallic Hybrids Functionalized by Amino Acid Ligands

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Directed Synthesis of {Mn₁₈Cu₆} Heterometallic Complexes