weakly coordination anions

  • 文章类型: Journal Article
    带有“裸”镍原子的过渡金属化合物的合成和反应性是一个活跃的研究领域,在形成的化合物中观察到显着的键合模式。在这个领域,对具有Pn和Asn(2≤n≤5)部分的配合物的配位行为进行了深入的研究。然而,迄今为止,由于与低产量和适度的空气稳定性有关的艰巨挑战,对较重类似物的研究被忽略。在这里,我们提出了第一个深入研究,涉及含有Sb供体原子的有机金属配合物与几种AgI盐的反应性。这些反应提供了十二个前所未有的聚集体作为单体,二聚体以及AgI离子的三和四元链在文献中声称是不可接近的。原子间距离以及借助几种不同方法获得的计算证据表明,在包含一个以上AgI离子的所有配合物中,都存在Ag·······Ag相互作用。
    Synthesis and reactivity of transition metal compounds bearing \"naked\" pnictogen atoms is an active research area with remarkable bonding patterns observed in the formed compounds. Within this field, intense investigations on the coordination behavior of complexes possessing Pn and Asn (2≤n≤5) moieties have been conducted. However, studies on heavier analogues have been ignored so far due to arduous challenges related to low yields and moderate air stability. Herein, we present the first in-depth study addressing the reactivity of organometallic complexes containing Sb-donor atoms with several AgI salts. These reactions afforded twelve unprecedented aggregates as monomers, dimers as well as three- and four-membered chains of AgI ions claimed in the literature to be inaccessible. Interatomic distances as well as computational evidence obtained with help of several different methods suggest the presence of Ag⋅⋅⋅Ag interactions in all complexes containing more than one AgI ion.
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