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In the history of magnetochemistry development, lanthanide-transition (3d-4f) heterometallic compounds have been considered an attractive candidate for magnetic refrigerants. Herein, a series of heterometallic compounds have been designed and templated by CO anions, that is, {[LnNi(L)(CO)(HO)]·HO} [Ln = Gd (. Gd2Ni) = Sm (. Sm2Ni) = Tb (. Tb2Ni), HCO = oxalic acid; HL = ethylene diamine tetraacetic acid]. The structural analysis reveals that Ln2Ni compounds feature a CO-templated wavy-shaped two-dimensional layer. Then, adjacent wavy-shaped layers are further aggregated by CO anions, resulting in an innovative three-dimensional metal-organic framework. Magnetization analysis revealed that Gd2Ni exhibits a favorable -Δmaxm of 38.0 J kg K at 2.0 K for 7.0 T. In addition, the effect of weak ferromagnetic exchange interactions in Gd2Ni contributes to a decent magnetocaloric effect at low fields (-Δ = 25.1 J kg K at 2.0 T for 2.0 K and -Δ = 14.5 J kg K at 1.0 T for 2.0 K), outperforming most 3d-4f heterometallic compounds reported previously.
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http://dx.doi.org/10.1039/d4dt03056g | DOI Listing |
Dalton Trans
September 2025
Department of Chemical Sciences, Tezpur University, Napaam 784028, Sonitpur, Assam, India.
Reaction of [Mn(salophen)Cl] {salophen = -phenylenediamine bis(salicylidenaminato)} with a tricyano Fe(III) precursor complex, [Fe(bbp)(CN)] {Hbbp = bis(2-benzimidazolyl)pyridine}, affords a dinuclear cyano-bridged heterometallic Mn-(μ-NC)-Fe fragment in the complex salt [Mn(salophen)(HO)][Mn(salophen)(HO)(μ-NC)Fe(bbp)(CN)]·4HO (1). The title compound shows field-induced slow relaxation of magnetization below 2.8 K.
View Article and Find Full Text PDFInorg Chem
September 2025
College of Chemistry and Chemical Engineering, Qingdao University, Shandong 266071, P. R. China.
By adjusting the solvents, nitrogen-containing auxiliary ligands, and transition metal salts, we successfully constructed 11 new aluminum-transition heterometallic clusters of and . They possess the same metal cores with different terminal-coordinated solvents and nitrogen-containing auxiliary ligands. Given their structural differences, we investigated the variations in the photothermal effects and aldol condensation catalytic reaction.
View Article and Find Full Text PDFAdv Sci (Weinh)
August 2025
School of Chemistry and Chemical Engineering, School of Electronics, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
Designing heterometallic oxygen-bridge structure (M1-O-M2) to achieve the efficient and stable electrochemical conversion of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) has become an important approach to address the rapid consumption of fossil fuels and mitigate white pollution. However, designing effective M1-O-M2 structures and elucidating their catalytic mechanisms remains a key challenge in this field. In this study, a high oxidation state V-O-Co structure is constructed by doping V into reconstructed CoOOH, which promotes the formation of the active intermediate V-O.
View Article and Find Full Text PDFDalton Trans
August 2025
Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, White City, London W12 0BZ, UK.
The alkaline earth metals are notorious for their tendency to form ionic compounds of their dications. In recent years, however, chemists have found ways to kinetically skirt around the edges of these thermodynamic sinks, thereby providing access to new pastures of molecular alkaline earth element chemistry. Most prominently, novel low-oxidation state reagents have enabled the synthesis of a wide range of complexes with alkaline earth-metal interactions.
View Article and Find Full Text PDFSmall
August 2025
Institute of Nanotechnology, Karlsruhe Institute of Technology (INT), Kaiserstraße 12, 76131, Karlsruhe, Germany.
Atomically-precise heterometallic nickel-based clusters are an emerging class of functional nanomaterials with intriguing optical and magnetic properties. However, synthetic challenges restrict their exploration in comparison to heterometallic coinage metal-based nanoclusters. This study presents a single-step synthesis of the two new thiolate-bridged copper-nickel cluster compounds [CuNiS(MCP)] (1) and [CuNi(MCP)I] (2) (MCPH = 2-mercaptopyridine; MCP = deprotonated 2-mercaptopyridine) at an elevated temperature.
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