New homo- and hetero-alkali metal alkoxide cages; crystal structures of [Me2N(CH2)2OLi]8 and [{Me2N(CH2)2O}12Li8K6]O

Autor:	Philip C. Andrews, Peter J. Nichols, Jonathan G. MacLellan, Robert E. Mulvey
Rok vydání:	2002
Předmět:	Crystallography chemistry.chemical_compound Cyclohexane Chemistry Dimer Alkoxide Molecule General Chemistry Crystal structure Random hexamer Single crystal Monoclinic crystal system
Zdroj:	Monash University
ISSN:	1364-5447 1472-7773
DOI:	10.1039/b110708a
Popis:	The reaction of N,N′-dimethylaminoethanol (DMAEH), (Me)2N(CH2)2OH, with nBuLi and nBuLi/nBuK respectively results in the formation of the homo- and hetero-metallic alkoxides [Me2N(CH2)2OLi]8, 1, and [{Me2N(CH2)2O}12Li8K6]O, 2, rather than mixed alkyl–alkoxide species. From single crystal X-ray diffraction studies the two complexes are shown to be highly aggregated cage structures. Complex 1 (monoclinic, C2/c) adopts a rare octameric structure constructed from a ring stacked hexamer fused with a (LiO)2 dimer creating a sixteen vertex Li–O cluster. Complex 2, which crystallises (rhombohedral, R) with thf and cyclohexane molecules in the lattice, forms a highly symmetrical, almost spherical, cage with an unprecedented Li ∶ K ratio of 8 ∶ 6.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be4ee7cdc7f6ec0cfb53192f5687ef1c https://doi.org/10.1039/b110708a Zobrazit plný text záznamu