Ducilon John, Nicholas Aaron D, Surbella Robert G, Gorden Anne E V
Department of Chemistry, Texas Tech University.
National Security Directorate, Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99354, USA.
Chemistry. 2024 Oct 8;30(56):e202402047. doi: 10.1002/chem.202402047. Epub 2024 Sep 17.
We report the synthesis, structure, and characterization of two novel neptunyl complexes (NpOL1 and NpOL2) constructed from phenylene-substituted benzyl ester bis(pyrrole)phenylenediamine (named "pyrrophen") ligands. In both cases, the neptunium center exists in the +6 oxidation state,. As our specific interest is in exploring the chemistry of neptunium compounds containing the linear neptunyl ion (NpO ) through equatorially coordinating the metal by multidentate organic ligands, we have identified the differences that are likely to cause discrepancy between the two complexes by examining the ions and their coordinative environments through single-crystal X-ray crystallography, diffuse reflectance, and Raman spectroscopy. This is the first time pyrrophen has been utilized in Np chemistry and demonstrates a new platform to study 5 f electron participation and coordination.
我们报道了由亚苯基取代的苄酯双（吡咯）苯二胺（名为“吡咯苯”）配体构建的两种新型镎酰配合物（NpOL1和NpOL2）的合成、结构和表征。在这两种情况下，镎中心均以+6氧化态存在。由于我们特别感兴趣的是通过多齿有机配体在赤道方向配位金属来探索含线性镎酰离子（NpO）的镎化合物的化学性质，我们通过单晶X射线晶体学、漫反射和拉曼光谱研究了离子及其配位环境，从而确定了可能导致这两种配合物存在差异的因素。这是吡咯苯首次用于镎化学研究，并展示了一个研究5f电子参与和配位的新平台。
