4.7 Article

Synthesis and Characterization of Ternary Clusters Containing the[As16]10-Anion, [MM′As16]4-(M = Nb or Ta; M′= Cu or Ag)

期刊

INORGANIC CHEMISTRY
卷 61, 期 10, 页码 4421-4427

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.1c03940

关键词

-

资金

  1. National Natural Science Foundation of China [92161102, 21971118]
  2. Natural Science Foundation of Tianjin City [20JCYBJC01560, B2021202077]
  3. EPSRC [EP/L015722/1]

向作者/读者索取更多资源

This study demonstrates the synthesis of [Nb@As8]3- anions and its isostructural precursors combined with low-valent late transition metals to generate ternary polyarsenide cluster anions with unique structural motifs. These cluster anions comprise a fusion of two distinct branches of polyarsenide chemistry, providing a new entry point for the rational design of multinary arsenic-based materials.
The [Nb@As8]3-anion was first isolated from solution in1986, and a number of isostructural [M@Pn8]n-clusters (M = Nb, Cr, or Mo; Pn = As or Sb; n= 2 or 3) have since been reported. We show here how anions of this class can be used as synthetic precursors that, in combination with sources of low-valent late transition metals (Cu and Ag),generate ternary polyarsenide cluster anions with unprecedented structural motifs. Chain type [MM ' As16]4-(M = Nb or Ta; M '= Cu or Ag) units are found in compounds2-5. These clusters contain a nortricyclane-like As7cage and a [M@As8] crown, linked by a single As atom, and represent afusion of two quite distinct branches of polyarsenide chemistry. Our analysis of the electronic structure confirms that the clusterretains many of the features of the component units. Electrospray ionization mass spectrometry reveals a series of smaller componentions containing 8-12 As atoms, the density functional theory-computed structures of which can be understood in terms of the pseudoelement concept. This work not only presents a new type of coordination mode for As clusters but also offers a point of entry for the rational design of multinary arsenic-based materials

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据