¹H-enhanced ¹⁰³Rh NMR spectroscopy and relaxometry of ¹⁰³Rh(acac)₃ in solution.

Q3 Physics and Astronomy

Magnetic resonance (Gottingen, Germany) Pub Date : 2024-08-30 eCollection Date: 2024-01-01 DOI:10.5194/mr-5-121-2024

Harry Harbor-Collins, Mohamed Sabba, Markus Leutzsch, Malcolm H Levitt

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Abstract

Recently developed polarisation transfer techniques are applied to the $^{103} Rh$ nuclear magnetic resonance (NMR) of the $^{103} Rh (acac)_{3}$ coordination complex in solution. Four-bond $^{1} H$ - $^{103} Rh$ $J$ couplings of around 0.39 $Hz$ are exploited to enhance the $^{103} Rh$ NMR signal and to estimate the $^{103} Rh$ $T_{1}$ and $T_{2}$ relaxation times as a function of field and temperature. The $^{103} Rh$ longitudinal $T_{1}$ relaxation in $^{103} Rh (acac)_{3}$ is shown to be dominated by the spin-rotation mechanism, with an additional field-dependent contribution from the $^{103} Rh$ chemical shift anisotropy.

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溶液中103Rh(acac)3的1h增强核磁共振波谱和弛豫测量。

将近年来发展起来的极化转移技术应用于103 Rh (acac) 3配合物溶液中的103 Rh核磁共振（NMR）。利用约0.39 Hz的四键1 H - 103 Rh J耦合来增强103 Rh核磁共振信号，并估计103 Rh t1和t2弛豫时间作为场和温度的函数。103 Rh (acac) 3中的103 Rh纵向t1弛豫由自旋机制主导，103 Rh化学位移各向异性也有额外的场依赖性贡献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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