AbstractCycloplatinated complexes, with their high reactivity, combined with the capability to tailor ligands for specific catalytic processes, play a pivotal role in materials science and coordination chemistry, serving as versatile catalysts for applications in the organic synthesis of industrially relevant processes. In this report, we describe the synthesis and characterization of a new family of Pt(II) complexes based on three isomeric pyridyl‐β‐diketones diversified in terms of N‐atom location in the heterocyclic ring. By appropriate control of the reaction conditions, we were able to generate distinct coordination species, featuring ligands arranged as N,C(sp3)‐ and N,O‐chelates, as well as simple pyridyl‐N donors. Various analytical techniques, including X‐Ray diffraction, NMR spectroscopy and ESI‐MS spectrometry enabled the characterization of different coordination modes of the central atoms and unambiguously established the complex structures. Furthermore, all the Pt(II) coordination units have been found to be highly active and selective catalyst precursors in the hydrosilylation reactions within a broad scope of olefins with hydrosilanes.
摘要环铂络合物具有高反应活性,可为特定催化过程定制配体,在材料科学和配位化学领域发挥着举足轻重的作用,是应用于工业相关过程有机合成的多功能催化剂。在本报告中,我们介绍了基于三种异构吡啶基-β-二酮的新型铂(II)配合物家族的合成和表征,这些配合物在杂环中的 N 原子位置方面具有多样性。通过对反应条件的适当控制,我们能够生成不同的配位种类,包括以 N,C(sp3)-和 N,O-螯合物排列的配体,以及简单的吡啶基-N 给体。通过 X 射线衍射、核磁共振光谱和 ESI-MS 光谱等各种分析技术,我们确定了中心原子的不同配位模式,并明确地确定了复合物的结构。此外,在烯烃与氢硅烷的广泛氢硅烷化反应中,发现所有铂(II)配位单元都是高活性、高选择性的催化剂前体。