Dalton Transactions

doi: 10.1039/C6DT90085Bpmid: N/A

doi: 10.1039/c6dt90085bpmid: N/A

doi: 10.1039/C6DT90086Kpmid: N/A

doi: 10.1039/c6dt90086kpmid: N/A

doi: 10.1039/C6DT90087Apmid: N/A

doi: 10.1039/c6dt90087apmid: N/A

Tanaka, Susumu; Imoto, Hiroaki; Kato, Takuji; Naka, Kensuke

doi: 10.1039/c6dt00723fpmid: 26999272

Nucleophilic arsenic reagents were prepared in situ from a nonvolatile cyclooligoarsine. As–As bond cleavage of the cyclooligoarsine readily proceeded with anion sources. Various kinds of organoarsenic compounds were easily constructed in high yields by selecting anion sources and electrophiles. In comparison with conventional methods of As–C bond formation, a wide variety of organoarsenic compounds were safely and easily synthesized by using this method.

Wang, Jingyi; Ganguly, Rakesh; Yongxin, Li; Díaz, Jesus; Soo, Han Sen; García, Felipe

doi: 10.1039/c6dt00978fpmid: 27112317

Mechanochemistry is well-established in the solid-phase synthesis of inorganic materials but has rarely been employed for molecular syntheses. In recent years, there has been nascent interest in ‘greener’ synthetic methods with less solvent, higher yields, and shorter reaction times being especially appealing to the fine chemicals and inorganic catalyst industries. Herein, we demonstrate that main-group indium(iii) complexes featuring bis(imino)acenaphthene (BIAN) ligands are readily accessible through a mechanochemical milling approach. The synthetic methodology reported herein not only bypasses the use of large solvent quantities and transition metal reagents for ligand synthesis, but also reduces reaction times dramatically. These new main-group complexes exhibit the potential to be reduced to indium(i) compounds, which may be employed as photosensitizers in organic catalyses and functional materials.

Hu, Gonghao; Miao, Hao; Mei, Hua; Zhou, Shuai; Xu, Yan

doi: 10.1039/c6dt00138fpmid: 27117492

The first polyoxometalates modified by a porphyrin-resembling planar Schiff base have been successfully designed and synthesized under hydrothermal conditions. The third-order NLO responses indicated that they are excellent third-order NLO materials. Their catalytic performances are also investigated.

Sun, Qiao; Liu, Min; Li, Keyan; Han, Yitong; Zuo, Yi; Wang, Junhu; Song, Chunshan; Zhang, Guoliang; Guo, Xinwen

doi: 10.1039/c5dt05002bpmid: 26862863

A series of MIL-53(Fe)-type materials, Fe(BDC)(DMF,F), were prepared by using different ratios of n(FeCl3)/n(FeCl2), which have varied amounts of Fe2+ in their frameworks. From FeCl3 to FeCl2, the structures of the synthesized samples transform from MIL-53(Fe) to Fe(BDC)(DMF,F). Along with this structure transformation, the crystal morphology goes through a striking change from a small irregular shape to a big triangular prism. This phenomenon indicates that the addition of FeCl2 is beneficial for the formation of a Fe(BDC)(DMF,F) structure. The catalytic activity of these iron-containing MOFs was tested in phenol degradation with hydrogen peroxide as an oxidant at near neutral pH and 35 °C. The degradation efficiency of these samples increases gradually from MIL-53(Fe) to Fe(BDC)(DMF,F). 57Fe Mössbauer spectra reveal that Fe2+ and Fe3+ coexist in the Fe(BDC)(DMF,F) framework, and the highest amount of Fe2+ in the sample prepared with mixed FeCl3 and FeCl2 is 26.0%. The result illustrates that the amount of Fe2+ in the samples can be controlled using varied n(FeCl3)/n(FeCl2) in the feed. The diverse amount of Fe2+ in this series of FeMOF materials exactly explains the distinction of reaction efficiency. The iron leaching tests, structures of the fresh and used catalysts, and the data of the recycling runs show that the Fe-containing MOFs are stable in this liquid-phase reaction.