Kosone Takashi, Okuda Syogo, Kawata Masaya, Arai Shunsuke, Kosuge Ryota, Kawasaki Takeshi
Department of Science and Engineering, Graduate School of Science and Engineering, Tokyo Denki University, Hatoyama, Hiki-gun, Saitama 350-0394, Japan.
Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1, Kamitomioka, Nagaoka, Niigata 94-2188, Japan.
ACS Omega. 2021 Apr 29;6(18):12187-12193. doi: 10.1021/acsomega.1c00892. eCollection 2021 May 11.
New three-dimensional spin crossover (SCO) coordination polymers systematically constructed by the novel building unit [Ag (CN)], Fe(3-Br-5-CHpyridine)[Ag (CN)][Ag(CN)] (), Fe(3-Br-5-Clpyridine)[Ag (CN)][Ag(CN)] (), and Fe(3,5-Brpyridine)[Ag (CN)][Ag(CN)] (), have been synthesized and characterized. The bismonodentate binuclear [Ag(CN)] and mononuclear [Ag(CN)] units and Fe atoms assemble to form a 3D network structure. The structures of - are crystallographically identical, which made up the triply interpenetration combined with complicated intermolecular interactions including Ag···Ag, Ag···X (pyridine substituents) and π-stacking interactions. Magnetic and differential scanning calorimetry studies were performed for -. These compounds display a similar SCO behavior, while the critical temperatures ( ) are shifted by the substituent effect. Due to the identical structures of -, the order of clearly corresponds with the Hammett constant.
通过新型构筑单元[Ag(CN)]、Fe(3 - Br - 5 - CH吡啶)[Ag(CN)][Ag(CN)]（）、Fe(3 - Br - 5 - Cl吡啶)[Ag(CN)][Ag(CN)]（）和Fe(3,5 - Br吡啶)[Ag(CN)][Ag(CN)]（）系统构建的新型三维自旋交叉（SCO）配位聚合物已被合成并表征。双单齿双核[Ag(CN)]和单核[Ag(CN)]单元以及Fe原子组装形成三维网络结构。 - 的结构在晶体学上是相同的，它们通过包括Ag···Ag、Ag···X（吡啶取代基）和π堆积相互作用在内的复杂分子间相互作用构成三重互穿结构。对 - 进行了磁性和差示扫描量热法研究。这些化合物表现出相似的SCO行为，而临界温度（ ）因取代基效应而发生位移。由于 - 的结构相同， 的顺序与哈米特常数明显对应。
