Tris(μ2-methano-lato)-μ3-oxido-tris-{[(E)-4-chloro-2-({[2-(pyridin-2-yl)eth-yl]imino}-meth-yl)pheno-lato]manganese(III)} perchlorate-di-chloro-methane-diethyl ether (1/1.1/0.9).

Rita Egekenze,Yilma Gultneh,Ray J Butcher

doi:10.1107/s2056989017008982

Rita Egekenze, Yilma Gultneh + Show 1 more

Open Access

https://doi.org/10.1107/s2056989017008982

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Abstract

In the title compound, [Mn3(C14H12ClN2O)3(CH3O)3O]ClO4·1.1CH2Cl2·0.9C4H10O, the cation consists of a central Mn3O core with μ2-methano-late bridging between adjacent MnIII atoms, thus giving each MnIII atom a mer-O3 coordination environment. Six-coordination for each MnIII atom is provided by the deprotonated Schiff base ligand (E)-4-chloro-2-({[2-(pyridin-2-yl)eth-yl]imino}-meth-yl)phenolate. There are extensive C-H⋯O and C-H⋯Cl inter-actions, which link the cations, anions, and solvent mol-ecules into a three-dimensional array.

Highlights

In the title compound, [Mn3(C14H12ClN2O)3(CH3O)3O]ClO41.1CH2Cl20.9C4H10O, the cation consists of a central Mn3O core with 2-methanolate bridging between adjacent MnIII atoms, giving each MnIII atom a mer-O3 coordination environment
Six-coordination for each MnIII atom is provided by the deprotonated Schiff base ligand (E)-4-chloro-2-({[2-(pyridin-2-yl)ethyl]imino}methyl)phenolate
Employing salicylaldoxime ligands in manganese chemistry has proved to be extremely successful in the synthesis of new polynuclear complexes, including some SMMs (Milios et al, 2004) and single-chain magnets (SCMs) (Feng et al, 2009), suggesting that such ligands are excellent candidates for the preparation of polynuclear Mn complexes with interesting magnetic properties

Summary

Chemical context

Single-molecule magnets (SMMs) have attracted extensive attention because they are nanoscale magnetic particles of a well-defined size (Gatteschi & Sessoli 2003; Tasiopoulos et al., 2004) and, in particular, manganese polynuclear manganese units have been investigated extensively in this respect. Employing salicylaldoxime ligands in manganese chemistry has proved to be extremely successful in the synthesis of new polynuclear complexes, including some SMMs (Milios et al., 2004) and single-chain magnets (SCMs) (Feng et al, 2009), suggesting that such ligands are excellent candidates for the preparation of polynuclear Mn complexes with interesting magnetic properties. Most surprisingly in view of ubiquity of this type of ligand in transition metal coordination chemistry, there was not a single example in this list where the N2O coordination environment was supplied by a Schiff base ligand based on substituted salicylaldehyde derivatives. This paper reports the first example of such a structural type

Structural commentary

Supramolecular features

Refinement

Synthesis and crystallization