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- W2046212683 abstract "A temperature dependence of 13 C CPMAS NMR was measured for revealing the local electron spin structure in [Rh 2 (acam) 4 Cl] n (Hacam=acetamide). Observed two sharp peaks were assigned to carbons of crystallographycally nonequivalent CH 3 groups and a broad one to C in the C=O group. A large high-field shift of -125 ppm was observed in C (C=0), indicating a negative spin polarization on this carbon. From the temperature dependence of Fermi contact shifts, the hyperfine coupling constant of each carbon was determined. By considering hyperfine coupling constants, it is found that a marked amount of electron spins are distributed on C (C=O) with the negative polarization, and a small positive spin exists even on the terminal carbons in methyl groups. 1 H MAS NMR spectra can be explained by the superposition of different shift lines, implying that spin polarization is also generated on hydrogen atoms. Rhodium complex Acetamidato complex Dinuclear complex Electron spin polarization 13 C CPMAS NMR Hyperfine coupling constant" @default.
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- W2046212683 date "2002-01-01" @default.
- W2046212683 modified "2023-10-18" @default.
- W2046212683 title "Spin Polarization in Infinite Zigzag Chains of [Rh 2 (HNCOCH 3 ) 4 Cl] n" @default.
- W2046212683 doi "https://doi.org/10.1080/713738627" @default.
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