Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Volume 46 , Issue 7
Showing 1-42 articles out of 42 articles from the selected issue
Highlight Review
  • Yukari Yamazaki, Yuichiro Mutoh, Shinichi Saito
    2017 Volume 46 Issue 7 Pages 904-912
    Published: July 05, 2017
    Released: July 05, 2017
    JOURNALS RESTRICTED ACCESS

    An efficient strategy for the synthesis of interlocked compounds such as rotaxanes and catenanes has been extensively studied for several decades. Recently, the catalytic activity of the macrocyclic metal complex was utilized to synthesize interlocked compounds. In this new approach, the bond-forming reaction proceeded inside the ring so that the interlocked structure could be synthesized efficiently. In this review, we discuss recent progress in the synthesis of interlocked compounds from phenanthroline-Cu complexes based on this strategy.

    An efficient strategy for the synthesis of interlocked compounds such as rotaxanes and catenanes has been extensively studied for several decades. Recently, the catalytic activity of the macrocyclic metal complex was utilized to synthesize interlocked compounds. In this new approach, the bond-forming reaction proceeded inside the ring so that the interlocked structure could be synthesized efficiently. In this review, we discuss recent progress in the synthesis of interlocked compounds from phenanthroline-Cu complexes based on this strategy. Fullsize Image
     
  • Ya-Fan Lin, Ching-Wen Chiu
    2017 Volume 46 Issue 7 Pages 913-922
    Published: July 05, 2017
    Released: July 05, 2017
    JOURNALS RESTRICTED ACCESS

    As the synthetic applications of boron monocations as stoichiometric reagents or catalysts have expanded significantly in the past decade, investigation on the molecular electronics and reactivity of the related boron dications remains in its infancy. This mini-review highlights the recent advancements in boron polycations consisting of one or multiple boron centers. The structure–reactivity relationship of these dicationic species will also be discussed.

    As the synthetic applications of boron monocations as stoichiometric reagents or catalysts have expanded significantly in the past decade, the investigation on the molecular electronics and reactivity of the related boron dications remains in its infancy. This mini-review highlights the recent advancement in boron polycations consisting of one or multiple boron centers. The structure–reactivity relationship of these dicationic species will also be discussed. Fullsize Image
     
Letter
Editor’s Choice
Letter
Editor’s Choice
Letter
Editor’s Choice
Letter
  • Tomokazu Umeyama, Sho Shibata, Kensho Igarashi, Shogo Takahara, Tomohi ...
    2017 Volume 46 Issue 7 Pages 1001-1003
    Published: July 05, 2017
    Released: July 05, 2017
    JOURNALS RESTRICTED ACCESS

    The α-type isomer of [6,6]-phenyl-C71-butyric acid methyl ester (α-[70]PCBM) has been separated into enantiomers. The structures of (R)- and (S)-α-[70]PCBM were unambiguously identified by X-ray crystallography. Systematic investigations on photovoltaic properties of devices based on the optically active/inactive α-[70]PCBM acceptor and a conjugated polymer donor revealed that the enantiomer separations and combinations have insignificant effects on the device performances.

Editor’s Choice
  • Masaaki Sadakiyo, Takahiro Kuramoto, Kenichi Kato, Miho Yamauchi
    2017 Volume 46 Issue 7 Pages 1004-1006
    Published: July 05, 2017
    Released: July 05, 2017
    JOURNALS RESTRICTED ACCESS

    We newly synthesized an amino-functionalized zeolitic imidazolate framework (ZIF), [Zn{(dmamIM)n(mIM)m}2] (dmamIM: 2-[(dimethylamino)methyl]imidazolate; mIM: 2-methylimidazolate), through a ligand-exchange reaction using an amino-functionalized ligand, dmamIM, and ZIF-8 as a mother framework. Original ligand of ZIF-8, mIM, was partially replaced with the dmamIM under various solvothermal conditions. The crystal structures of resultant specimens were analyzed by Rietveld method combined with maximum entropy method using synchrotron X-ray powder diffraction patterns. Porous characters of the compound were examined using adsorption measurements and alternate-current impedance measurements. The ligand exchange was found to occur as an equilibrium reaction in the reaction solutions. The reaction rate deeply depends on the types of solvents and the introduced ligands are homogeneously distributed on the sodalite-type framework.

Letter
Editor’s Choice
Letter
feedback
Top