The novel octanuclear cluster [Mn8O2(OH)2(OMe)12(OAc)2(Mesalim)4] (1) presents SMM behaviour with a relatively high experimental energy barrier (eff/kB= 36.0 K) as shown by its dc and ac magnetic properties.
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http://dx.doi.org/10.1039/b504116c | DOI Listing |
J Am Chem Soc
August 2024
Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Liangxiang Campus, Beijing Institute of Technology, Beijing 102488, P. R. China.
Responsive spin-crossover (SCO) metal-organic cages (MOCs) are emerging dynamic platforms with potential for advanced applications in magnetic sensing and molecular switching. Among these, Fe-based MOCs are particularly noteworthy for their air stability, yet they remain largely unexplored. Herein, we report the synthesis of two novel Fe MOCs using a bis-bidentate ligand approach, which exhibit SCO activity above room temperature.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
July 2024
Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated Materials State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350108, China.
Atomically precise low-nuclearity (n<10) silver nanoclusters (AgNCs) have garnered significant interest due to their size-dependent optical properties and diverse applications. However, their synthesis has remained challenging, primarily due to their inherent instability. The present study introduces a new feasible approach for clustering silver ions utilizing highly negative and redox-inert polyoxoniobates (PONbs) as all-inorganic ligands.
View Article and Find Full Text PDFDalton Trans
December 2023
State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
The triazolate-assisted asymmetric dinuclear oxovanadium(IV) citrate [VO(cit)(Hdatrz)]·5HO (1, Hcit = citric acid, Hdatrz = 1-1,2,4-triazole-3,5-diamine) and its additive salt [VO(cit)(Hdatrz)][VO(cit)]·2Hdatrz·9.5HO (2) and the polymerized hexanuclear product [VO(μ-O)(cit)(Hdatrz)]·4HO (3) have been isolated at different temperatures, respectively. Adduct 2 shows strong evidence for the conversion of a symmetric dinuclear oxovanadium(IV) citrate to a mixed-ligand asymmetric oxovanadium(IV) citrate.
View Article and Find Full Text PDFSmall
March 2024
Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France.
The exact molecular reaction pathway and crystallization mechanisms of LiNbO nanoparticles under solvothermal conditions are derived through extensive time- and temperature-resolved experiments allowing to track all the transient molecular and solid species. Starting with a simple mixing of Li/Nb ethoxides, water addition is used to promote condensation after ligand exchange with different co-solvents including alcohols and glycols of variable carbon-chain length. A nonclassical nucleation scheme is first demonstrated after the identification of new octanuclear complexes with a {LiNbO} core whose solvophobic interactions mediate their aggregation, thus, resulting in a colloidal gel at room-temperature.
View Article and Find Full Text PDFDalton Trans
August 2023
Department of Chemistry, Tianjin University, Tianjin, 300072, China.
It is difficult and challenging to design and construct high-nuclearity Ln(III)-based clusters due to the high coordination numbers and versatile coordination geometries of Ln(III) ions. Herein, two novel octanuclear Ln(III)-based clusters [Ln(HL)(HL)(NO) (CO)](NO)·2CHCN (Ln = Nd (1) and Sm (2)) have been synthesized under solvothermal conditions. The X-ray single analysis reveals that both 1 and 2 are octanuclear structures and the eight central Ln(III) ions are bridged by two CO anions.
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