Chiral heterobimetallic chains from a dicyanideferrite building block including a π-conjugated TTF annulated ligand
作者:Long Cui、Zhong-Peng Lv、Chanel F. Leong、Jing Ru、Deanna M. D'Alessandro、You Song、Jing-Lin Zuo
DOI:10.1039/c6dt01756h
日期:——
The π-conjugated tetrathiafulvalene (TTF) annulated ligand was introduced into a dicyanometallate for the first time, leading to the synthesis of the versatile redox-active dicyanideferrite buildingblock [(n-Bu)4N][Fe(TTFbp)(CN)2] (H2TTFbp = N-(2-(4,5-bis(methylthio)-1,3-dithiol-2-ylidene)-5-(picolinamido) benzo[d][1,3]dithiol-6-yl) picol inamide). The incorporation of the new precursor with chiral
Enhanced dielectricity coupled to spin-crossover in a one-dimensional polymer iron(<scp>ii</scp>) incorporating tetrathiafulvalene
作者:Ya-Ru Qiu、Long Cui、Pei-Yu Cai、Fei Yu、Mohamedally Kurmoo、Chanel F. Leong、Deanna M. D'Alessandro、Jing-Lin Zuo
DOI:10.1039/d0sc02388d
日期:——
In designing multifunctional materials for potential switches that can be used as memory devices, the high-spin (HS) to low-spin (LS) crossover (SCO) one-dimensional polymer, [FeII(L)(4,4′-bpy)]n, was constructed from a designed redox-active tetrathiafulvalene (TTF) functionalized Schiff-base and the ditopic linker 4,4′-bipyridine (bpy). It exhibits an 8 K hysteretic SCO centred at T1/2 = 325 K which
在设计可用作存储器件的电位开关的多功能材料时,高自旋 (HS) 到低自旋 (LS) 交叉 (SCO) 一维聚合物 [Fe II (L)(4,4'- bpy)] n,由设计的氧化还原活性四硫富瓦烯 (TTF) 官能化席夫碱和双位接头 4,4'-联吡啶 (bpy) 构建而成。它表现出以T 1/2 = 325 K为中心的 8 K 滞后 SCO,这与介电常数的变化有关。高于和低于转变温度的晶体结构显示出相似的平行线性⋯Fe-bpy-Fe-bpy⋯链,显示出 Fe II的膨胀HS状态下的八面体。密度泛函理论 (DFT) 计算揭示了由 Fe 的 Mülliken 电荷和偶极矩的大小和方向所代表的一致的电子电荷和自旋变化,这证实了实验观察结果。
Tetrathiafulvalene‐Fused Heterabuckybowl: Protonation‐Induced Electron Transfer and Self‐Sensitized Photooxidation
The electron donor tetrathiafulvalene (D1) was fused onto the electron‐rich heterabuckybowl trichalcogenasumanene (D2) through an electron‐deficient pyrazine unit (A) to give 1 c , 1 d , 2 c , and 2 d , featuring the D1–A–D2 structure. Both D1 and D2 play a pivotal role in intramolecularcharge‐transfer (ICT) transitions, consequently 1 c , 2 d , 2 c , and 2 d show a broad ICT band at 450–720 nm in
Stabilization and isolation of radical cation and dication salts of a tetrathiafulvalene derivative functionalized with amino groups
作者:Xiang Li、Yu-Han Liu、Guang-Zhou Zhu、Feng Gao
DOI:10.1039/d0nj04033a
日期:——
The radicalcation and dication salts of a tetrathiafulvalene (TTF) derivative functionalized with two amino groups have been successfully stabilized and isolated specifically by chemical oxidation using a polyfluoroalkoxyaluminate weak coordinating anion, [Al(ORF)4]− (ORF = OC(CF3)3). These compounds were characterized by UV-Vis-NIR absorption spectroscopy, 1H NMR, EPR, and X-ray single crystal diffraction
通过使用多氟烷氧基铝酸盐弱配位阴离子[Al(OR F)4 ] -(OR F = OC()的化学氧化,已成功地稳定并分离了被两个氨基官能化的四硫富瓦烯(TTF)衍生物的自由基阳离子和阳离子盐。CF 3)3)。这些化合物分别通过UV-Vis-NIR吸收光谱,1 H NMR,EPR和X射线单晶衍射进行表征。结合理论计算,对它们的结构-性质关系进行了综合研究。
A heterometallic ferrimagnet based on a new TTF-bis(oxamato) ligand
作者:Long Cui、Jing-yuan Ge、Chanel F. Leong、Deanna M. D'Alessandro、Jing-Lin Zuo
DOI:10.1039/c6dt04903f
日期:——
An interesting heterometallic one-dimensional complex [Cu(TTF-opba)][Mn(CH3OH)2]}n based on a π-extended TTF ligand was prepared through the method of “metalloligand”. It retains the redox activity and shows ferrimagnetic behavior.