Co-complexation of a potassium amide with iBu3Al in the presence of the tridentate chelating ligand PMDETA results in a series of potassium aluminates of general formula [PMDETA·K(μ-amide)(μ-iBu)Al(iBu)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.
在三叉螯合
配体 PMDETA 的存在下,
钾酰胺与 iBu3Al 发生共络合,产生了一系列通式为 [
PMDETA-K(μ-酰胺)(μ-iBu)Al(iBu)2][其中酰胺 =
TMP (6);
DMP (7);
HMDS (8)]的铝酸
钾,这些铝酸
钾已通过溶液核磁共振光谱和 X 射线晶体学进行了表征。它们的固态结构包含一个 KNAlC 中心环,其皱缩程度由
钾中心和铝结合阴离子
配体之间不同的相互作用决定。