Das Kausik, Pink Maren, Rajca Suchada, Rajca Andrzej
Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, USA.
J Am Chem Soc. 2006 Apr 26;128(16):5334-5. doi: 10.1021/ja060846o.
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.
自旋标记的2'-脱氧尿苷被制备成结晶固体，在环境条件下稳定，其中很大一部分自旋密度从氮氧自由基离域到DNA碱基残基上。晶体堆积包括多个氢键，形成了分子的一维链，链内主要是铁磁耦合，链间是较弱的反铁磁耦合。
