C∧C* cyclometalated platinum(II) NHCcomplexes with chelating acetylacetonate ligands have been recently shown to be an interesting class of phosphorescent emitters. We sought to clarify the role of the acetylacetonate ligand by replacing one of the coordinating oxygen atoms in the auxiliaryligand with an NH group. This allowed us to study the effect on the emission, and we found that the nature of
Ç ∧ C *环金属化铂(II)配合物NHC与乙酰丙酮螯合配位体已被最近证明是一类有趣的磷光发射体的。我们试图通过用NH基团代替辅助配体中的配位氧原子之一来阐明乙酰丙酮酸酯配体的作用。这使我们能够研究对排放的影响,我们发现发射过程的性质显著变化。本文我们报告新颖环金属铂的合成(II)NHC络合物与螯合β酮亚胺配体(3 Ž)-4-氨基-3-戊烯-2-酮和(2 ž)-3-氨基-1-苯基-2-丁烯-1-一。由于辅助配体的非对称性质,两种异构体总是形成,其可被分离和表征。它们的光物理特性以及这个类新的化合物的代表性成员的固态结构中给出。所有新的复合物发出在蓝色与量子产率高达74%在室温下在可见光谱的绿色区域。异构体的光物理数据显示出显着差异。新的化合物已被充分表征通过1 H和13C以及2D NMR(COSY,HSQC,HMBC,NOESY)光谱。DFT计算用于确定各个异构体之间的差异,并预测合成配
Synthesis, Structure, and Catalytic Studies of Palladium and Platinum Bis-Sulfoxide Complexes
作者:Emma E. Drinkel、Linglin Wu、Anthony Linden、Reto Dorta
DOI:10.1021/om4000067
日期:2014.2.10
palladium and platinumcomplexes. Various Pt bis-sulfoxide complexes could be made by using the precursor Pt(M,SS,SS)-p-tolyl-binaso}Cl2 (5a) and abstracting the chlorides with silver salts. The Pd analogue of this compound (4) could not be used in the same way. In this case, the sulfoxides appear to be very weakly coordinated and different methods to make stable Pd bis-sulfoxide complexes had to be found
Synthesis and characterization of cyanocobalamin conjugates with Pt(II) complexes towards potential therapeutic applications
作者:Dominika Porębska、Łukasz Orzeł、Dorota Rutkowska-Żbik、Grażyna Stochel、Rudi van Eldik
DOI:10.1016/j.poly.2022.116230
日期:2023.1
carrier of inorganic cytostatics potentially reducing the side effects of chemotherapy. Our studies were focused on the effect of ligands on the stability of platinum(II) conjugates with CblCN. The synthesis of three selected conjugates containing coordinated chloride ions, water molecules, diethylenetriamine or terpyridine were monitored spectrophotometrically and the formation of desired binuclear
氰钴胺素 (CblCN) 对癌细胞的亲和力增加为其用作无机细胞抑制剂的载体提供了基础,可能会减少化疗的副作用。我们的研究重点是配体对铂 (II) 与 CblCN 缀合物稳定性的影响。通过分光光度法监测含有配位氯离子、水分子、二亚乙基三胺或三联吡啶的三种选定缀合物的合成,并通过 MS-ESI 确认所需双核复合物的形成,195Pt NMR 和 IR 光谱。此外,应用分子模型来确定缀合物的几何形状和结合能。根据我们的结果,治疗性金属配位球的扩展对 CblCN 缀合物的稳定性产生负面影响,这在其预期嵌入能力的背景下可以被认为是预期的。