Evolution of manganese–calcium cluster structures based on nitrogen and oxygen donor ligands. Issue 26 (22nd June 2017)

• Record Type: Journal Article
• Authors: Melnic, S.; Shova, S.; Benniston, A. C.; Waddell, P. G.
• Is Part Of: CrystEngComm. Volume 19:Issue 26(2017)
• Page Start: 3674
• Page End: 3681
• Publication Date: 2017-06-22
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c7ce00931c
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Starting from the basic bidentate ligand H-HMP structures of manganese calcium complexes were produced, with three revealing a common Ca2 Mn2 O6 core but with subtly different packing arrangements. A "wheel and axle" like structure was produced in the final case. Abstract : 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 Ca2 Mn2 O6 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.