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Structural insights into mono-amido tris-alkyl potassium aluminates

Conway, Ben and Garcia-Alvarez, Pablo and Kennedy, Alan R. and Klett, Jan and Mulvey, Robert E. and Robertson, Stuart D. (2010) Structural insights into mono-amido tris-alkyl potassium aluminates. New Journal of Chemistry, 34 (8). pp. 1707-1712. ISSN 1144-0546

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Abstract

Co-complexation of a potassium amide with (Bu3Al)-Bu-i in the presence of the tridentate chelating ligand PMDETA results in a series of potassium aluminates of general formula [PMDETA center dot K(mu-amide)(mu-Bu-i)Al(Bu-i)(2)] [where amide = TMP (6); DMP (7); HMDS (8)] which have been characterized by solution NMR spectroscopy and X-ray crystallography. Their solid-state structures contain a central KNAlC ring whose degree of puckering is dictated by the differing interactions between the potassium centre and the aluminium bound anionic ligands.