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- W4383046648 abstract "The NMR spectroscopy of spin-1/2 nuclei with low gyromagnetic ratio is challenging, due to the low NMR signal strength. Methodology for the rapid acquisition of $^{103}$Rh NMR parameters is demonstrated for the case of the rhodium formate paddlewheel complex $mathrm{Rh_2(HCO_2)_4}$. A scheme is described for enhancing the $^{103}$Rh signal strength by polarization transfer from $^{1}$H nuclei and which also greatly reduces the interference from ringing artifacts, a common hurdle for the direct observation of low-$gamma$ nuclei. The $^{103}$Rh relaxation time constants $T_1$ and $T_2$ are measured within 20 minutes using $^{1}$H-detected experiments. The field-dependence of the $^{103}$Rh $T_1$ is measured. The high-field relaxation is dominated by the chemical shift anisotropy (CSA) mechanism. The $^{103}$Rh shielding anisotropy is found to be very large: $|Deltasigma|=9900pm540mathrm{,ppm}$. This estimate is compared with density functional theory calculations." @default.
- W4383046648 created "2023-07-04" @default.
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- W4383046648 date "2023-06-30" @default.
- W4383046648 modified "2023-09-27" @default.
- W4383046648 title "The $^{103}$Rh NMR Spectroscopy and Relaxometry of the Rhodium Formate Paddlewheel Complex" @default.
- W4383046648 doi "https://doi.org/10.48550/arxiv.2306.17457" @default.
- W4383046648 hasPublicationYear "2023" @default.
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