Regulating Spin-State Switching by Integrating Polyoxometalate Anion into Spin Crossover System

Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 61(45), P. 17932 - 17936

Published: Nov. 2, 2022

Polyoxometalate (POM) anions were successfully integrated into Fe(II) spin crossover (SCO) system, which demonstrates an effective role in regulating spin-state switching properties. Specifically, three drastically different magnetic behaviors of ion the identical cation [Fe(bpp)2]2+ achieved by leveraging [Mo6O19]2-, [Mo8O26]4-, and [Na(Mo8O26)]3-, respectively.

Language: Английский

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A Lanthanide-Incorporated Phospho(III)tungstate Aggregate Constructed from [HP^IIIW₈O₃₁]^10– and [W₁₁O₃₉]^12– Building Blocks and Its Nanocomposite with CdS for Ultrasensitive Photoelectrochemical Detection of Oxytetracycline

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(33), P. 15348 - 15358

Published: Aug. 6, 2024

A novel tartronic acid decorated hexa-Ce

Language: Английский

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A Rh-substituted polyoxometalate with an acetate-modified building block {As₂W₂₂O₇₆(CH₃COO)₂}

Chemical Communications, Journal Year: 2021, Volume and Issue: 57(79), P. 10250 - 10253

Published: Jan. 1, 2021

The first example of Rh-substituted organic–inorganic hybrid arsenotungstate [H 2 N(CH 3 ) ] 8 {[Na(H O) 4 ]NaAs W 22 (CH COO) O 76 Rh (N(CH }·H (1) has been synthesized and the Rh–As bond presented in POM chemistry.

Language: Английский

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High sodium conductive polymer electrolyte-based nanoclusters in supercapacitor

Journal of Electroanalytical Chemistry, Journal Year: 2024, Volume and Issue: 976, P. 118765 - 118765

Published: Nov. 9, 2024

Language: Английский

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Molecular Approach to Alkali-Metal Encapsulation by a Prussian Blue Analogue Fe^II/Co^IIICube in Aqueous Solution: A Kineticomechanistic Exchange Study

Inorganic Chemistry, Journal Year: 2021, Volume and Issue: 60(23), P. 18407 - 18422

Published: Nov. 12, 2021

The preparation of a series alkali-metal inclusion complexes the molecular cube [{CoIII(Me3-tacn)}4{FeII(CN)6}4]4- (Me3-tacn = 1,4,7-trimethyl-1,4,7-triazacyclononane), mixed-valent Prussian Blue analogue bearing bridging cyanido ligands, has been achieved by following redox-triggered self-assembly process. cubes are extremely robust and soluble in aqueous media ranging from 5 M [H+] to 2 [OH-]. All have characterized standard mass spectometry, UV-vis, inductively coupled plasma, multinuclear NMR spectroscopy, electrochemistry. Furthermore, X-ray diffraction analysis sodium lithium salts also achieved, moieties form {M-OH2}+ (M Li, Na) is confirmed. These solution rather inert cation exchange significant decrease acidity confined water molecule due hydrogen bonding inside cubic cage. Exchange encapsulated cationic or M+ units other alkali metals studied kineticomechanistic perspective at different concentrations, temperatures, ionic strengths, pressures. In all cases, thermal pressure activation parameters obtained agree with process that dominated differences hydration cations entering exiting cage, although size portal enabling plays determinant role, thus not allowing large Cs+ enter. substitutions follow thermodynamic sequence relates polarizing capability cations; even so, can be reversed, entry {Li-OH2}+ upon adsorption on an anion resin subsequent washing Li+ solution.

Language: Английский

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Calixpyridinium–Polyoxometalate Nanoparticle Assemblies for the Removal of Organic Dyes from Wastewater

ACS Applied Nano Materials, Journal Year: 2022, Volume and Issue: 5(9), P. 13208 - 13217

Published: Aug. 25, 2022

In this work, three organic–inorganic hybrid calixpyridinium–polyoxometalate nanoparticle assemblies were constructed by the strong electrostatic interactions of calixpyridinium with phosphotungstic acid (PTA, H3PW12O40), silicotungstic (STA, H4SiW12O40), and phosphomolybdic (PMA, H3PMo12O40). Interestingly, all irregular, spherical nanoparticles but quite different sizes. The smallest calixpyridinium–PTA assembly had most excellent removal effect on organic dyes, such as crystal violet (CV), eriochrome black T (EBT), congo red (CR) in presence H2O2 light. This became worse when using a larger from calixpyridinium–STA to calixpyridinium–PMA under same conditions. addition, solid phosphoric selective adsorption capacity for cationic CV, methylene blue (MB), rhodamine B (RhB), acidic study not only gave structure–function relationship also supplied an alternative green convenient method dyes wastewater.

Language: Английский

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¹⁸³W Nuclear Magnetic Resonance and Photocatalysis Studies of Two Ruthenium-Decorated Isopolyoxometalates {Ru₂W₁₀} and {Ru₂W₁₃} via pH-Induced Assemblies

Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 61(31), P. 12097 - 12105

Published: July 23, 2022

Two structurally intriguing Ru-containing isopolyoxometalates [(Ru(OH))2O(W5O18)2]8- (1) and [(W5O18)(Ru2W8O31)]12- (2) were constructed from subtly different conditions. Single-crystal X-ray diffraction indicated that the precise pH modification has allowed us to trap a diruthenium-oxo core within isopolyoxotungstate species. Compound 1 is first sandwich-type ruthenium consisting of linear {(HO)Ru-O-Ru(OH)} unit two Lindqvist-type {W5} building blocks, while ligand replacement with an unusual {W8} ring in case compound produced unique embedded-type 2 quasi-linear {Ru-O-Ru} core. In addition being determined solid state, crystal structures also confirmed by 183W nuclear magnetic resonance (NMR) spectroscopy electrospray ionization-mass spectrometry (ESI-MS) solution. NMR spectrum demonstrated two-line pattern (with approximately 4:1 relative intensities) consistent pseudo-D2h symmetry observed state. However, other lines according C2v but not accord expected 4/4/4/1 ratio crystalline which structure could be maintained completely aqueous After recrystallizing sample water, partly converted 1, transformation was combined results NMR, ESI-MS single-crystal measurements. Catalytic investigations showed their sodium salts presented excellent photocatalytic activities toward benzylamine oxidation reaction induced visible light (λ > 400 nm). The compounds can still without significant yield decrease after five continuous cycles. Furthermore, both catalysts proceed oxidative coupling smoothly for most primary derivatives bearing various functional groups (H, F, Cl, Br, Me) good yields.

Language: Английский

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Building a molecular PrussianBlueAnalogue FeII/CoIII cube around a Cs+ ion; a preferred, tight, robust, water soluble, and kinetically inert encapsulator

Inorganica Chimica Acta, Journal Year: 2022, Volume and Issue: 545, P. 121282 - 121282

Published: Nov. 10, 2022

The preparation of a caesium inclusion complex the molecular cube [{CoIII(Me3-tacn)}4{FeII(CN)6}4]}]4–, mixed valent Prussian Blue Analogue bearing bridging cyanido ligands, has been achieved by following redox-triggered self-assembly process in aqueous solution. assembly shown to be Cs-preferred as, even presence Na+ solution, no Na-encapsulated have found assembled product when Cs+ is present reaction medium. Even so, tightness system produces large amounts void cubic structure whenever not excesses are present. species robust, extremely soluble media, pH-stable 1–13 range, and redox inactive between −400 600 mV. characterised UV–vis, ICP, multinuclear NMR spectroscopy, electrochemistry. As expected from previous data reported, solution totally inert cation exchange, leaching encapsulated being hampered small size portal.

Language: Английский

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A photochromic double-polyanion-type arsenotungstate

Inorganica Chimica Acta, Journal Year: 2024, Volume and Issue: 572, P. 122264 - 122264

Published: July 18, 2024

Language: Английский

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High Sodium Conductive Polymer Electrolyte-Based Nanoclusters in Supercapacitor

Published: Jan. 1, 2024

Language: Английский

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