Charge and Configuration Evolution of Intermetalloid Clusters [(Ge9)2M]q-(M/q = Ge/4, In/5, Cd/6, and K/7)

Charge and Configuration Evolution of Intermetalloid Clusters [(Ge9)2M]q-(M/q = Ge/4, In/5, Cd/6, and K/7)
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扩展的 MoIV3-多金属氧酸盐:1D-[MoIV6MoVI4Ge2ZnO31py9 (H2O)]4- 和 2D-​​[MoIV3MoVI9Zn6P7O56py8](py = 吡啶)

DOI:
10.1021/acs.organomet.1c00697
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发表时间:
2022-02-28
期刊:
影响因子:
2.8
通讯作者:
Xu, Li
Xu, Li
中科院分区:
化学2区
文献类型:
--
作者:
Lin, Lifang;Wang, Yi;Xu, Li

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通过[Ge-9](2-)和Ni(CO)(2)(PPh 3)(2)在2,2,2-穴状吡啶中的氧化取代反应,合成了类金属间簇合物顺式[(eta(3)-Ge-9)(2){Ge(Ni(CO)(2))(3)}](4-)([1](4-))。Zintl相KxMGe(M/x = In/1和Cd/2)在18-冠-6的乙二胺(en)中的溶液反应生成顺-[(eta(3)-Ge-9)(2)In](5-)([2](5-))和反-[(eta(3)-Ge-3(9))(2)Cd](6-)([3](6-))。X射线晶体学分析揭示了它们的类双烯结构,中心原子Ge/Ni/Cd夹在一对三帽三角棱柱[Ge-9]单元之间,呈交错(反)或重叠(顺)排列。[1](4-)中的中心Ge进一步与三个Ni(CO)(2)三角键合形成平面Ge(Ni(CO)(2))(3)碎片。[2](5-)具有高晶体学C-3 h对称性,解释了重叠构象。[3](6-)是[(eta(3)-Ge-9)(2)M]的一个新家族成员,它通过[K2 Ge 9](2-)相互连接形成中心点[3]中心点[K2 Ge 9]中心点[3]中心点无限链。[1](4-)/[2](5-)/[3]6(-)的团簇电荷仅依赖于中心原子的最外层电子,达到八电子之和或八隅体规则。用密度泛函理论计算了团簇电荷对[Ge-9]单元几何参数的影响。
The intermetalloid cluster syn-[(eta(3)-Ge-9)(2){Ge(Ni(CO)(2))(3)}](4-) ([1](4-)) was prepared from the oxidative substitution reaction of [Ge-9](2-) and Ni(CO)(2) (PPh3)(2) in pyridine of 2,2,2-crypt. Solution reactions of the Zintl phases KxMGe (M/x = In/1 and Cd/2) in ethylenediamine (en) of 18-crown-6 yielded syn-[(eta(3)-Ge-9)(2)In](5-) ([2](5-)) and anti-[(eta Ge-3(9))(2)Cd](6-) ([3](6-)). The X-ray crystallographic analyses reveal their metallocene-like structure with the central atoms Ge/Ni/Cd sandwiched by a couple of tricapped trigonal prismatic [Ge-9] units in a staggered (anti-) or eclipsed (syn-) arrangement. The central Ge in [1](4-) is further triangularly bonded to three Ni(CO)(2) to form the planar Ge(Ni(CO)(2))(3) fragment. [2](5-) bears a high crystallographic C-3h symmetry accounting for the eclipsed conformation. [3](6-) is a new family member of [(eta(3)-Ge-9)(2)M], which is interconnected by [K2Ge9](2-) to form the center dot[3]center dot[K2Ge9]center dot [3]center dot infinite chain. The cluster charge of [1](4-)/[2](5-)/[3]6(- )has been found to solely depend on the outmost shell electrons of the central atoms to achieve a sum of eight electrons or octet rule. The DFT theoretical calculations have been carried out to explain the influence of the cluster charge on the geometric parameters of the [Ge-9] units.