Non-Porous Iron(II)-Based Sensor: Crystallographic Insights into a Cycle of Colorful Guest-Induced Topotactic Transformations
作者:Santiago Rodríguez-Jiménez、Humphrey L. C. Feltham、Sally Brooker
DOI:10.1002/anie.201608813
日期:2016.11.21
different guests: 1 (MeCN)⇌2 (EtOH)→3 (H2O)⇌1 (MeCN). Whilst 1 and 2 remain dimetallic, SCSC to 3 involves conversion to a 1D polymeric chain (due to a change in L bridging mode), which, remarkably, can undergo SCSC de‐polymerization, reforming dimetallic 1. Additionally, SC‐XRD studies of two ordered transient forms, 1TF3 and 2TF3, confirm that guest exchange occurs by diffusion of the new guests into
能够通过一组易于监视的输出来在室温下感测挥发性客体的材料对于发展为小型挥发性有机物和有毒气体的化学传感器具有极大的吸引力。本文中的双核铁(II)配合物,的[Fe II 2(大号)2(CH 3 CN)4 ](BF 4)4 ⋅2CH 3 CN(1)[大号= 4-(4-甲基苯基)-3- (3-吡啶哒嗪基)-5-吡啶基-4H-1,2,4-三唑]被证明在暴露于不同客体蒸气下会经历可逆的单晶至单晶(SCSC)转化:1(MeCN )⇌ 2(乙醇)→ 3(H 2 O)⇌ 1(MeCN中)。当1和2保持双金属状态时,SCSC至3涉及转化为一维聚合物链(由于L桥接模式的改变),该链显着地可以进行SCSC解聚,从而重整双金属1。此外,对两个有序瞬态形式1TF3和2TF3的SC‐XRD研究证实,随着旧来宾的离开,新来宾扩散到无孔晶格中,从而发生了来宾交换。这些可逆的SCSC事件还引起颜色和磁响应。确实,深红色1具有自旋交叉活性(T