Evolution of manganese-calcium cluster structures based on nitrogen and oxygen donor ligands

Melnyk Silvia; Shova Sergiu; Benniston Andrew; Waddell Paul G.

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MELNYK, Silvia, SHOVA, Sergiu, BENNISTON, Andrew, WADDELL, Paul G.. Evolution of manganese-calcium cluster structures based on nitrogen and oxygen donor ligands. In: CrystEngComm, 2017, vol. 19, pp. 3674-3681. ISSN 1466-8033. DOI: https://doi.org/10.1039/c7ce00931c

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CrystEngComm

Volumul 19 / 2017 / ISSN 1466-8033

Evolution of manganese-calcium cluster structures based on nitrogen and oxygen donor ligands

DOI:https://doi.org/10.1039/c7ce00931c

Pag. 3674-3681

Melnyk Silvia¹, Shova Sergiu¹, Benniston Andrew², Waddell Paul G.²

¹ Institute of Chemistry of the Academy of Sciences of Moldova,
² Newcastle University

Disponibil în IBN: 17 decembrie 2018

Rezumat

Several X-ray determined structures are described of ditopic clusters based on the Mn_(m)Ca_(n) motif where m = 2, n = 2; m = 6, n = 2. A cuboid arrangement of Ca₂Mn₂O₆ is observed in three structures and they vary slightly in terms of Mn-O and Ca-O bond lengths. A "wheel and axle" like motif is observed in the final structure in which a calcium thread resides inside a Mn₆ ring. Crystal packing features are also described for the cuboid structures and subtle structural changes are discussed in the framework of supramolecular chemistry and crystal engineering.

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