Triangular luminescent box: Self-assembly of a new multidentate receptor with europium cations results in the formation of trinuclear discrete complexes. X-ray crystallography shows that nine-coordinate cations are linked by ligands to provide a triangular complex in the solid state and in solution. Despite the coordinated solvent molecules, this topologically unusual complex exhibits remarkable luminescent properties.
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http://dx.doi.org/10.1002/chem.200802676 | DOI Listing |
Chemistry
November 2024
Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China.
Hierarchical self-assembly driven by non-covalent interactions is a prevalent strategy employed by nature to construct sophisticated biomacromolecules, such as proteins. However, the construction of protein-like superstructures that rely on weaker dispersion forces-driven hierarchical assembly remains largely unexplored. Here, we report the first example of dispersion forces driving the high-order assembly of the lanthanide trinuclear circular helicate [HNEt₃]₃[Eu₃(L)₆] (ΔΔΔ-1) into a protein-like lanthanide octamer ((ΔΔΔ-1)₈-2).
View Article and Find Full Text PDFInorg Chem
December 2024
Department of Chemistry, University of Kalyani, Nadia, Kalyani, West Bengal 741235, India.
A novel heterometallic trinuclear cluster [CuMn(cpdp)(NO)(Cl)] () has been designed and synthesized by employing a molecular library approach that uses CuCl·2HO and Mn(NO)·4HO as inorganic metal salts and Hcpdp as a multifunctional organic scaffold (Hcpdp = ,'-bis[2-carboxybenzomethyl]-,'-bis[2-pyridylmethyl]-1,3-diaminopropan-2-ol). This heterometallic cluster has emerged as an unusual ferromagnetic material and promising electrocatalyst for hydrogen evolution reaction (HER) in the domain of inorganic and materials chemistry. Crystal structure analysis establishes the structural arrangement of , revealing a butterfly-like topology with an unusual seven-coordinated Mn(II) center.
View Article and Find Full Text PDFChemistry
September 2024
School of Science and Technology, Chemistry Division, University of Camerino, ChIP Via Madonna delle Carceri, 10, I-62032, Camerino, Italy.
A yet-outstanding supramolecular chemistry challenge is isolation of novel varieties of stacked complexes with finely-tuned donor-acceptor bonding and optoelectronic properties, as herein reported for binary adducts comprising two different cyclic trinuclear complexes (CTC@CTC'). Most previous attempts focused only on 1-2 factors among metal/ligand/substituent combinations, resulting in heterobimetallic complexes. Instead, here we show that, when all 3 factors are carefully considered, a broadened variety of CTC@CTC' stacked pairs with intuitively-enhanced intertrimer coordinate-covalent bonding strength and ligand-ligand/metal-ligand dispersion are attained (d 2.
View Article and Find Full Text PDFInorg Chem
December 2023
Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
A new linear trinuclear Co(II) complex with a formula of [{Co(μ-L)}Co] has been prepared by self-assembly of Co(II) ions and the NO-tripodal Schiff base ligand HL, which is obtained from the condensation of 1,1,1-tris(aminomethyl)ethane and salicylaldehyde. Single X-ray diffraction shows that this compound is centrosymmetric with triple-phenolate bridging groups connecting neighboring Co(II) ions, leading to a paddle-wheel-like structure with a pseudo- axis lying in the Co-Co-Co direction. The Co(II) ions at both ends of the Co(II) molecule exhibit distorted trigonal prismatic CoNO geometry, whereas the Co(II) at the middle presents an elongated trigonal antiprismatic CoO geometry.
View Article and Find Full Text PDFChemistry
December 2023
Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P.R. China.
Hierarchical combinations involving metal-ligand interactions and host-guest interactions can consolidate building blocks with unique functions into material properties. This study reports the construction and hierarchical self-assembly of multifunctional trinuclear Au tricarbene complex containing three crown ether units and three ferrocene units. Host-guest interactions between the multifunctional trinuclear Au tricarbene complex and organic ammonium salts were investigated, revealing that crown ether-based host-guest interactions can effectively regulate the electrochemical properties of the complex.
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