Phenazin-5(10H)-yls, 4. 10-Ethylphenazin-5(10H)-yl · H2O: Crystal Structure, Magnetic Susceptibility and Intermolecular π-π Interactions (Pimerization)
作者:Marco R. Gleiter、Claus Krieger、Franz A. Neugebauer、Reinhard K. Kremer
DOI:10.1002/jlac.199619961121
日期:1996.11
The unit cell of 10-ethylphenazin-5(10H)yl · H2O consists of eight phenazin-5(10H)-yls that are arranged in four independent radical pairs A–D. All pairs show close interplanar distances (3.28–3.36 Å). Furthermore, A, B, and D are characterized by short intermolecular contacts between atoms with significant spin populations. This is not valid for the pair C with the closest interplanar distance of
10-乙基phenazin-5(10 H)yl·H 2 O的晶胞由八个phenazin -5(10 H)-yl组成,它们排列在四个独立的基团对A–D中。所有的线对都显示出接近的平面间距(3.28–3.36Å)。此外,A,B和D的特征是具有大量自旋种群的原子之间的短分子间接触。这对具有最接近3.28Å的面对距离的C对无效。磁化率测量值随温度的变化表明在20至100 K之间完全自旋配对(“成对”)。因此,自由基对C 提供了证据,证明非特定的紧密平面间接触以及π系统的合理重叠足以导致固相化。