Dalton Transactions

doi: 10.1039/C8DT90163Epmid: N/A

doi: 10.1039/c8dt90163epmid: N/A

doi: 10.1039/c8dt90164cpmid: N/A

doi: 10.1039/C8DT90164Cpmid: N/A

doi: 10.1039/C8DT90165Apmid: N/A

doi: 10.1039/c8dt90165apmid: N/A

Saines, Paul J.; Bristowe, Nicholas C.

doi: 10.1039/c8dt02411apmid: 30112541

Materials with magnetic interactions between their metal centres play a tremendous role in modern technologies and can exhibit unique physical phenomena. In recent years, magnetic metal–organic frameworks and coordination polymers have attracted significant attention because their unique structural flexibility enables them to exhibit multifunctional magnetic properties or unique magnetic states not found in the conventional magnetic materials, such as metal oxides. Techniques that enable the magnetic interactions in these materials to be probed at the atomic scale, long established to be key for developing other magnetic materials, are not well established for studying metal–organic frameworks and coordination polymers. This review focuses on studies where metal–organic frameworks and coordination polymers have been examined using such microscopic probes, with a particular focus on neutron scattering and density-functional theory, the most-well established experimental and computational techniques for understanding magnetic materials in detail. This paper builds on a brief introduction to these techniques to describe how such probes have been applied to a variety of magnetic materials starting with select historical examples before discussing multifunctional, low dimensional and frustrated magnets. This review highlights the information that can be obtained from such microscopic studies, including the strengths and limitations of these techniques. The article then concludes with a brief perspective on the future of this area.

Tappe, Nadine A.; Reich, Robert M.; D'Elia, Valerio; Kühn, Fritz E.

doi: 10.1039/c8dt02346hpmid: 30207356

Due to the high emissions of CO2 and the related environmental impact, the chemical transformation of CO2 to useful industrially relevant products or their precursor is of significant interest. Recycling CO2 as a building block for the synthesis of chemicals may not only reduce further emission by at least replacing oil-derived feedstocks, but also provide the advantages of CO2 as an inexpensive, non-toxic and easily available substrate. The catalytic conversion of CO2 into small, useful molecules such as carbonates, methyl amines, methanol, formic acid, etc. by molecular catalysts is an interesting topic that has strongly developed in recent years. This review provides an overview of current scientific progress in the activation and conversion of carbon dioxide with industrially and scientifically relevant substrates using molecular catalysts. Metal-based catalysts are presented in the first part of the review whereas metal-free systems are described in the second part.

Kang, Tian-Shu; Zhang, Jia-Tong; Vellaisamy, Kasipandi; Ma, Dik-Lung; Leung, Chung-Hang

doi: 10.1039/c8dt01167bpmid: 30211915

Metal complexes based on iridium metal centers have attracted attention as probes due to their tunable biological and chemical characteristics. This review highlights recent examples of iridium-based compounds that have been developed as probes for various environmental analytes. We also discuss the further challenges to be overcome for this class of probes in the future.

Sugahara, Tomohiro; Guo, Jing-Dong; Hashizume, Daisuke; Sasamori, Takahiro; Nagase, Shigeru; Tokitoh, Norihiro

doi: 10.1039/c8dt03081bpmid: 30160268

A stable 3,5-diphenyl-1,2-disilabenzene was selectively synthesized by the reaction between the isolable disilyne TbbSiSiTbb (Tbb = 2,6-[CH(SiMe3)2]2-4-t-Bu-phenyl) with phenylacetylenes. Its molecular structure and physical properties were examined and compared to those of the 1,2-disilabenzene that was obtained from the reaction between TbbSiSiTbb and acetylene. Moreover, a plausible formation mechanism for this reaction is discussed.