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Diverse physical functionalities of rare-earth hexacyanidometallate frameworks and their molecular analogues
Inorganic Chemistry Frontiers ( IF 7 ) Pub Date : 2020-10-29 , DOI: 10.1039/d0qi01197e
Jakub J. Zakrzewski 1, 2, 3, 4 , Michal Liberka 1, 2, 3, 4 , Mikolaj Zychowicz 1, 2, 3, 4 , Szymon Chorazy 1, 2, 3, 4
Affiliation  

Rare-earth (RE) metal complexes exhibit attractive magnetic and optical properties related to their strong magnetic anisotropy and efficient photoluminescence. Due to the accessibility of high coordination numbers, they are useful molecular building blocks for the construction of bimetallic coordination systems. Therefore, they can be readily combined with hexacyanidometallate ions of transition metals into the d–f cyanido-bridged frameworks. This leads to the rich family of molecule-based materials varying from purely inorganic 3-D REIII–[MII/III(CN)6]4−/3− (RE = La–Lu, Y; M = Cr, Fe, Ru, Co) networks, through coordination polymers of lower dimensionality obtained with supporting organic ligands, up to strictly molecular species. The past decade brought intensive interest in the design and synthesis of rare-earth hexacyanidometallate frameworks with particular attention paid to their magnetic, optical, electronic, and mechanical properties. In this review, we discuss the most important results of this research area, including remarkable thermal expansion properties, magnetic ordering effects, single-molecule magnetism, luminescent functionalities, electrochemical activity for applications in alkali ion batteries and electroanalytical sensing, and efficient NMR relaxivity for magnetic resonance imaging, as well as photo- and pressure-induced switching of magnetic and optical characteristics. We focus on the recent advances, emphasizing also the general advantages and the future perspectives in the combination of RE(III) complexes and hexacyanidometallates within the d–f coordination frameworks towards the generation of diverse physical functionalities.

中文翻译:

稀土六氰基金属酸盐骨架及其分子类似物的多种物理功能

稀土(RE)金属配合物具有强大的磁各向异性和有效的光致发光特性,因此具有吸引人的磁性和光学特性。由于高配位数的可及性,它们是构建双金属配位系统的有用分子构建基块。因此,它们可以很容易地与过渡金属的六氰基金属离子结合成d-f氰基桥联的骨架。这导致了分子家族材料的丰富家族,从纯粹的无机3-D RE III – [M II / III(CN)6 ] 4− / 3−(RE = La–Lu,Y; M = Cr,Fe,Ru,Co)网络,通过具有低维数的配位聚合物与支持有机配体获得,直至严格的分子种类。在过去的十年中,人们对稀土六氰基金属酸盐骨架的设计和合成引起了浓厚的兴趣,并特别关注了它们的磁性,光学,电子和机械性能。在这篇综述中,我们讨论了该研究领域的最重要成果,包括卓越的热膨胀性能,磁有序效应,单分子磁性,发光功能,用于碱性离子电池和电分析传感的电化学活性以及对NMR有效的NMR弛豫性。磁共振成像以及光和压力引起的磁性和光学特性切换。III)在d-f协调框架内形成络合物和六氰基金属盐,以产生各种物理功能。
更新日期:2020-12-17
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