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SM ISO690:2012 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 | ||||||
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DOI:https://doi.org/10.1039/c7ce00931c | ||||||
Pag. 3674-3681 | ||||||
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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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