Solution phase and solid state studies of lanthanoid-calixarene bottlebrush clusters
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The conditions required for formation of unusual bottlebrush-shaped lanthanoid coordination clusters were investigated. The known clusters are supported by tetrazole-functionalised p-t-butylcalixarenes, and carboxylate co-ligands. It was confirmed that the lighter lanthanoids form mononuclear complexes, and heavier lanthanoids form bottlebrush clusters. Changing the carboxylate co-ligand had little impact on the complexes formed. Altering the structure of the calixarene had a significant impact. When the t-butyl group was replaced with hydrogen or allyl groups, mononuclear complexes formed.
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Lanthanoid “Bottlebrush” Clusters: Remarkably Elongated Metal-Oxo Core Structures with Controllable LengthsD'Alessio, Daniel; Sobolev, A.; Skelton, B.; Fuller, Rebecca; Woodward, R.; Lengkeek, N.; Fraser, B.; Massi, Massimiliano; Ogden, Mark (2014)Large metal-oxo clusters consistently assume spherical or regular polyhedral morphologies rather than high-aspect-ratio structures. Access to elongated core structures has now been achieved by the reaction of lanthanoid ...
Andrews, Philip; Gee, W.; Junk, Peter; Massi, Massimiliano (2013)The isolation of multinuclear lanthanoid clusters with different nuclearities and geometries commenced as a serendipitous discovery and is now the focus of intense research, not only from a coordination chemistry point ...
D'Alessio, Daniel Mark (2015)Syntheses of the bis-, tris- and tetra-tetrazolato calixarene ligands were performed from their corresponding nitrile derivatives. Mono-nuclear lanthanoid complexes were characterised in the presence of triethylamine, ...