Si@Al_(56)[N(2,6-iPr2C6H3)SiMe3]_(12): The Largest Neutral Metalloid Aluminum Cluster, a Molecular Model for a Silicon-Poor Aluminum-Silicon Alloy?

摘要

A few years ago, we presented Al_(38)(AlCp~*)_(12) (1, Cp~* = C5Me5), which was the largest neutral structurally characterized metaUoid cluster compound containing "naked" metal atoms. Many other metalloid aluminum clusters present a topology of aluminum atoms similar to the face-centered-cubic (fcc) lattice in solid aluminum metal. In contrast, 1 exhibits a Al8Al_(30)(AlCp~*)_(12) structural motif (see the Supporting Information).