To investigate the reactivity of homoatomic clusters [E₉]⁴⁻ (E = Si-Pb) and intermetalloid clusters [M@E₉]^q−, the reactions of the Zintl anions [Sn₉]⁴⁻ and [Ni@Sn₉]⁴⁻ with the CdMes₂ (Mes = Mesitylene) in the presence of 2.2.2-crypt were carried out. Two new compounds [K(2.2.2-crypt)]₆[(Sn₉)Cd(Sn₉)]·en (1) and [K(2.2.2-crypt)]₆[(Ni@Sn₉)Cd(Ni@Sn₉)]·en (2) were afforded. Both 1 and 2 were characterized by single-crystal X-ray diffraction, energy dispersive X-ray (EDX), and electrospray ionization mass spectrometry (ESI-MS), and can be viewed as two [Sn₉]⁴⁻ or [Ni@Sn₉]⁴⁻ subunits bridged by Cd ion in an η³:η³ coordination mode. Quantum chemical calculations reveal the relationships between the geometries and electronic structures of clusters 2a, [Ni₃Ge₁₈]⁴⁻ and [Cu₄@Sn₁₈]⁴⁻. Further electron localization technique (AdNDP method) was performed to explain chemical bonding patterns of 1a.

为了研究同原子簇 [E ₉ ] ^4- (E = Si-Pb) 和金属间簇 [M@E ₉ ] ^{q -}的反应性，Zintl 阴离子 [Sn ₉ ] ^4-和 [Ni@Sn ₉ ] ^4-与 CdMes ₂ (Mes = 均三甲苯) 在 2.2.2-crypt 的存在下进行。两个新化合物 [K(2.2.2-crypt)] ₆ [(Sn ₉ )Cd(Sn ₉ )]·en ( 1 ) 和 [K(2.2.2-crypt)] ₆ [(N i @Sn ₉ ) Cd(N i @Sn ₉ )]·en (2 ) 提供。1和2均通过单晶 X 射线衍射、能量色散 X 射线 (EDX) 和电喷雾电离质谱 (ESI-MS) 进行了表征，可以看作是两个 [Sn ₉ ] ^4-或 [Ni @Sn ₉ ] ⁴⁻由 Cd 离子以η ³ : η ³配位模式桥接的亚基。量子化学计算揭示了簇2a、[Ni ₃ Ge ₁₈ ] ^4-和 [Cu ₄ @Sn ₁₈ ] ^4-的几何形状和电子结构之间的关系. 进行了进一步的电子定位技术（AdNDP 方法）来解释1a的化学键合模式。