A series of tetranuclear grid-type complexes were prepared by the reaction of the asymmetric multidentate ligand HL (HL = 2-[3-(2-hydroxyphenyl)-1H-pyrazol-5-yl]-6-pyridine carboxylic acid ethylester) with different metal sources. The tetranuclear copper complex, [Cu4(L1)4(NO3)4(H2O)4] Et2O 2MeOH (1, HL1 = 2-[3-(2-hydroxyphenyl)-1H-pyrazol-5-yl]-6-pyridine carboxylic acid methyl ester) consists...

A tetranuclear molecular rectangle consisting of two bridging dicarbene ligands and two bridging diphosphine ligands was prepared by connection of two dinuclear gold(I) complexes with 1,2-bis(diphenylphosphino)ethane.

Tetranuclear [M 4 (OEt) 8 (L 1 ) (μ-O) 2 ] and dinuclear H (μ-O)] complexes (M = Nb, Ta) derived from benzilic acid diphenylglycine 3 have been structurally characterized are capable of the ROP μ-caprolactone rac -lactide.

The neutral dinuclear complexes [(η⁵-C₅Me₅)₂Rh₂(μ-dhnq)Cl₂] (1) and [(η⁵-C₅Me₅)₂Ir₂(μ-dhnq)Cl₂] (2) (dhnqH₂ = 5,8-dihydroxy-1,4-naphthoquinone) were obtained from the reaction of [(η⁵-C₅Me₅)M(μ-Cl)Cl]₂ (M = Rh, Ir) with dhnqH₂ in the presence of CH₃COONa. Treatment of 1 or 2 in methanol with linear ditopic ligands L (L = pyrazine, 4,4'-bipyridine or 1,2-bis(4-pyridyl)ethylene), in the presence ...

A novel tetranuclear [Pt4(Am4M)4]·16.25H2O (1), where H2Am4M is the thiosemicarbazone ligand (Z)-2-(amino(pyridin-2-yl)methylene)-N-methylhydrazinecarbothioamide, has been synthesized and characterized by using various physico-chemical techniques. X-ray analysis revealed that the Pt(II) complex consists of a neutral tetranuclear [Pt4(Am4M)4] unit and abundant water molecules. The tetranuclear u...

Assembly of dysprosium(iii) salts with versatile hydrazone H3L affords a variety molecular magnetic compounds from mononuclear, dinuclear, grid-like tetranuclear to linear 1D chain.

Three luminescent tetranuclear macrocycles are obtained selectively, applying coordination-driven supramolecular processes to the reaction of 3,3?-bipyridine ligand with in situ formed Cu(i) bimetallic units bearing a coordination angle ca. 120°.

The contribution of the solvation energies to the assembly of polynuclear helicates reduces the free energy of intermetallic repulsion, DeltaE(MM), in condensed phase to such an extent that stable D(3)-symmetrical tetranuclear lanthanide-containing triple-stranded helicates [Ln(4)(L4)(3)](12+) are quantitatively produced at millimolar concentrations, despite the twelve positive charge borne by ...

A heteroleptic N(6) coordinated Ru(II) complex acts as a building block for a discrete tetranuclear mixed metal Ru(II)(2)Ag(I)(2) coordination compound; both complexes have been structurally characterised by X-ray crystallography.

A novel tetranuclear Ir(iii) complex involving unprecedented coordination modes of alloxazine formed a closed pi-space by intermolecular hydrogen bonding and the counter anions encapsulated in the space could be exchanged via self-assembly.