[Cu<sub>4</sub>@E<sub>18</sub>]<sup>4–</sup> (E = Sn, Pb): Fused Derivatives of Endohedral Stannaspherene and Plumbaspherene
Lei Qiao, Chao Zhang, Cong‐Cong Shu, Harry W. T. Morgan, John E. McGrady, Zhong‐Ming Sun
Abstract
We report the synthesis of two new cluster anions, [Cu4@E18]4– (E = Sn, Pb), in which a Cu4 subunit is incorporated into a continuous E18 tetrel cage. Both anions are characterized by X-ray crystallography and mass spectrometry, complemented by quantum-chemical calculations that highlight the relationships to known Zintl clusters, including the stannaspherenes and plumbaspherenes [M@Sn12]q− and [M@Pb12]q−, the Matryoshka bronze [Sn@Cu12@Sn20]12–, and also [Pd2@E′18]4– (E′ = Ge, Sn).
Topics & Concepts
ChemistryCrystallographyOrganometallic Complex Synthesis and CatalysisSynthesis and characterization of novel inorganic/organometallic compoundsNanocluster Synthesis and Applications