Synthesis and structure of a nucleoside with pi-conjugated nitroxide spin label forming a one-dimensional ferromagnetic chain |
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Authors: | Das Kausik Pink Maren Rajca Suchada Rajca Andrzej |
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Institution: | Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, USA. |
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Abstract: | Spin labeled 2'-deoxyuridine, in which a significant fraction of the spin density is delocalized from a nitroxide radical to the DNA base residue, was prepared as a crystalline solid, stable at ambient conditions. The crystal packing, which includes multiple hydrogen bonds, leads to one-dimensional chains of molecules with predominant intrachain ferromagnetic coupling and weaker interchain antiferromagnetic coupling. |
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