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Crystals 2012, 2(3), 1034-1057; doi:10.3390/cryst2031034
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Magnetic and Electric Properties of Organic Conductors Probed by 13C-NMR Using Selective-Site Substituted Molecules

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Received: 6 April 2012; in revised form: 26 June 2012 / Accepted: 6 July 2012 / Published: 27 July 2012
(This article belongs to the Special Issue Molecular Conductors)
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Abstract: Quasi-One and quasi-two dimensional organic conductors consisting of TTF derivatives such as BEDT-TTF (bis-(ethylene-dithio)-tetra-thia-fulvalene) and TMTCF (C = S; TMTTF: tetra-methyl-tetra-thia-fulvalene, C = Se; TMTSF: tetra-methyl-tetra-selena-fulvalene) have been well investigated in condensed matter physics because of interest in the emerging electric and magnetic properties, such as the spin density wave, charge order, superconductivity, anti-ferromagnetism, and so on. To probe the electronic state, nuclear magnetic resonance (NMR) is one of the most powerful tools as the microscopic magnetometer. A number of 13C-NMR studies have been performed of the double-site central 13C=13C bond substituted molecules. However, problems with the coupled spin system of 13C=13C complicated the interpretation for observations on NMR. Therefore, single-site 13C-enriched molecules are desired. We summarize the problem of Pake doublet and the preparation of the single-site 13C-susbstituted BEDT-TTF and TMTCF molecules. We also demonstrate the superiority of 13C-NMR of the single-site 13C-susbstituted molecule utilizing the hyperfine coupling tensor.
Keywords: 13C-NMR; TMTTF; TMTSF; BEDT-TTF; Pake doublet; hyperfine coupling tensor 13C-NMR; TMTTF; TMTSF; BEDT-TTF; Pake doublet; hyperfine coupling tensor
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Hirose, S.; Misawa, M.; Kawamoto, A. Magnetic and Electric Properties of Organic Conductors Probed by 13C-NMR Using Selective-Site Substituted Molecules. Crystals 2012, 2, 1034-1057.

AMA Style

Hirose S, Misawa M, Kawamoto A. Magnetic and Electric Properties of Organic Conductors Probed by 13C-NMR Using Selective-Site Substituted Molecules. Crystals. 2012; 2(3):1034-1057.

Chicago/Turabian Style

Hirose, Shinji; Misawa, Masaki; Kawamoto, Atsushi. 2012. "Magnetic and Electric Properties of Organic Conductors Probed by 13C-NMR Using Selective-Site Substituted Molecules." Crystals 2, no. 3: 1034-1057.


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