School of Chemistry, Monash University, PO Box 23, Melbourne, VIC, 3800 (Australia).
Angew Chem Int Ed Engl. 2014 Jan 27;53(5):1338-41. doi: 10.1002/anie.201308935. Epub 2013 Dec 13.
The assembly of well-defined large cluster compounds of ionic light metal hydrides is a synthetic challenge and of importance for synthesis, catalysis, and hydrogen storage. The synthesis and characterization of a series of neutral and anionic pyrazolate-stabilized lithium hydride clusters with inorganic cores in the nanometer region is now reported. These complexes were prepared in a bottom-up approach using alkyl lithium and lithium pyrazolate mixtures with silanes in hydrocarbon solutions. Structural characterization using synchrotron radiation revealed isolated cubic clusters that contain up to 37 Li(+) cations and 26 H(-) ions. Substituted pyrazolate ligands were found to occupy all corners and some edges for the anionic positions.
将定义明确的大离子轻金属氢化物簇合物组装起来是一项具有挑战性的合成任务，对于合成、催化和储氢都很重要。现在已经报道了一系列中性和阴离子吡唑啉稳定的纳米级无机核锂氢化物簇合物的合成和表征。这些配合物是通过使用烷基锂和锂吡唑啉混合物与硅烷在碳氢溶液中进行的自下而上的方法制备的。使用同步辐射进行的结构表征揭示了含有多达 37 个 Li(+)阳离子和 26 个 H(-)离子的孤立立方簇。取代的吡唑啉配体被发现占据了阴离子位置的所有角和一些边。
