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2009•Zeitschrift für Naturforschung BOpen access

An 18-Membered Hexanuclear Manganese (MnN2)6 Metalladiazamacrocycle

Qifeng Liang

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Abstract

The macrocyclic hexanuclear manganese(III) 18-metallacrown-6, [Mn6(pmshz)6(DMF)4(C2H5- OH)2]·4DMF (1), where pmshz3− is N-propionyl-N'-5-methylsalicylhydrazide, has been synthesized by self-assembly and structurally characterized. The ring is formed by the succession of six structural moieties of the type [Mn(III)-N-N] with hydrazide N-N groups bridging the ring Mn ions. The ligand enforces the metal ions to form the stereochemistry of a configuration with alternate. . .ΔΛΔΛ. . .- type enantiomeric chiral units. The peripheral core ring is ~18.6 in diameter and ~12.4 Å in thickness. The title metallacrown exhibits photoluminescent properties in the solid state and a weak antiferromagnetic exchange interaction.

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What this paper is about

The macrocyclic hexanuclear manganese(III) 18-metallacrown-6, [Mn6(pmshz)6(DMF)4(C2H5- OH)2]·4DMF (1), where pmshz3− is N-propionyl-N'-5-methylsalicylhydrazide, has been synthesized by self-assembly and structurally characterized. The ring is formed by the succession of six structural moieties of the type [Mn(III)-N-N] with hydrazide N-N groups bridging the ring Mn ions. The ligand enforces the metal ions to form the stereochemistry of a configuration with alternate. . .ΔΛΔΛ. . .- type enantiomeric chiral units. The peripheral core ring is ~18.6 in diameter and ~12.4 Å in thickness. The title metallacrown exhibits photoluminescent properties in the solid state and a weak antiferromagnetic exchange interaction.

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Available abstract

The macrocyclic hexanuclear manganese(III) 18-metallacrown-6, [Mn6(pmshz)6(DMF)4(C2H5- OH)2]·4DMF (1), where pmshz3− is N-propionyl-N'-5-methylsalicylhydrazide, has been synthesized by self-assembly and structurally characterized. The ring is formed by the succession of six structural moieties of the type [Mn(III)-N-N] with hydrazide N-N groups bridging the ring Mn ions. The ligand enforces the metal ions to form the stereochemistry of a configuration with alternate. . .ΔΛΔΛ. . .- type enantiomeric chiral units. The peripheral core ring is ~18.6 in diameter and ~12.4 Å in thickness. The title metallacrown exhibits photoluminescent properties in the solid state and a weak antiferromagnetic exchange interaction.

Key concepts: Manganese, Crystallography, Ring (chemistry), Hydrazide, Chemistry, Enantiomer, Ion, Solid-state

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