Kimball James J, Schurko Robert W
Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States.
National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States.
J Phys Chem Lett. 2025 May 15;16(19):4596-4601. doi: 10.1021/acs.jpclett.5c00378. Epub 2025 May 1.
The platinum group elements (PGEs) are among the most important in the periodic table due to their critical roles in a diverse array of applications. There is great interest in using solid-state nuclear magnetic resonance (SSNMR) for studying the structure and bonding in PGE complexes from the perspective of the metal nuclides, yet this has been limited to date. This is largely due to the inherently low Larmor frequencies of many of the PGE nuclides in addition to factors such as low natural abundances and/or large anisotropic interactions that reduce their receptivity to the NMR experiment. In this work, we demonstrate for the first time the ability to indirectly detect (with H, = 1/2) wideline SSNMR powder patterns from stationary samples of compounds featuring Rh ( = 1/2) and Ru ( = 5/2) using the recently introduced progressive saturation of the proton reservoir (PROSPR) pulse sequence.
铂族元素（PGEs）在元素周期表中极为重要，因为它们在众多应用中发挥着关键作用。从金属核素的角度来看，利用固态核磁共振（SSNMR）研究PGE配合物的结构和键合引起了极大兴趣，但迄今为止这方面的研究还很有限。这主要是由于许多PGE核素本身的拉莫尔频率较低，此外还有诸如天然丰度低和/或各向异性相互作用大等因素，这些因素降低了它们对核磁共振实验的接受度。在这项工作中，我们首次展示了使用最近引入的质子库渐进饱和（PROSPR）脉冲序列，从含有Rh（I = 1/2）和Ru（I = 5/2）的化合物的静态样品中间接检测（通过H，I = 1/2）宽线SSNMR粉末图谱的能力。
