化学
反铁磁性
硼烷
主组元素
硼
抗磁性
结晶学
群(周期表)
钾
密度泛函理论
分子
吡啶
苯
无机化学
药物化学
计算化学
过渡金属
有机化学
磁场
物理
催化作用
量子力学
凝聚态物理
作者
Rui Feng,Li Zhang,Huapeng Ruan,Yue Zhao,Gengwen Tan,Xinping Wang
标识
DOI:10.1002/anie.201901177
摘要
Abstract The first main‐group element radical based one‐dimensional magnetic chain ( 1K ) n was realized by one‐electron reduction of the pyridinyl functionalized borane 1 with elemental potassium in THF in the absence of 18‐crown‐6 (18‐c‐6). The electron spin density of ( 1K ) n mainly resides at the boron centers with a considerable contribution from central benzene and pyridine moieties. The spin centers exhibit an antiferromagnetic interaction as demonstrated by magnetic measurements and theoretical calculations. In contrast, the reduction in the presence of 18‐c‐6 afforded the separated radical anion salt 1K(Crown) , in which the potassium cation was trapped by THF and 18‐c‐6 molecules. Further one‐electron reduction of 1K(Crown) and ( 1K ) n led to the diamagnetic monomer and polymer, respectively.
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