• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

A study of guest molecular motion and host structure of multi-dimensional framework metal complex hosts formed with bridging cyano groups.

Research Project

Project/Area Number 09640596
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical chemistry
Research InstitutionThe University of Tokyo

Principal Investigator

NISHIKIORI Shin-ichi  The University of Tokyo, Department of Basic science, Graduate School of Arts and Sciences, Associate Professor, 大学院・総合文化研究科, 助教授 (70134400)

Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 1999: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1998: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1997: ¥2,500,000 (Direct Cost: ¥2,500,000)
Keywordsmolecular motion / clathrate / host-guest compound / cyano complex / solid-state nmr / X-ray diffraction / phase transition / X線回折 / 団体NMR
Research Abstract

This research has been done in order to obtain information about the relation between guest molecular motion and host structure of multi-dimensional framework metal complex host clathrates formed with bridging cyano groups. Main techniques used here were ィイD12ィエD1H-NMR and X-ray diffraction. Obtained results and information are as follows.
1. A computer program for analyzing molecular motion from ィイD12ィエD1H-NMR powder patterns. This program is designed for treating various types of molecular motional modes.
2. The thermally activated process of the out-of-plane motion of the benzene guest of [Cd(CN)(dmen)ィイD22ィエD2]ィイD22ィエD2,[Cd(CN)ィイD24ィエD2] benzene clathrate, and molecular motion of a part of the metal complex host were clarified.
3. The information of benzene, toluene and ethylbenzene guest molecular motion in the cavity of a [N(CHィイD23ィエD2)ィイD24ィエD2] [CdィイD23ィエD2(CN)ィイD27ィエD2] host, and their motional behavior during the process of thermal decomposition was obtained. Some fundamental m … More olecular motional modes and some techniques of constructing more complicated molecular motion using the fundamental modes have ,been presented.
4. A phase transition of [S(CHィイD23ィエD2)ィイD23ィエD2][CdィイD23ィエD2(CN)ィイD27ィエD2]・p-xylene clathrate, which is accompanied with change of p-xylene guest molecular motional mode and host structure, was found out.
5. The information of the motional behavior of the pyrrole guest, which is a polar molecule, in Cd(NHィイD23ィエD2)ィイD22ィエD2Ni(CN)ィイD24ィエD2 and Cd(en)Ni(CN)ィイD24ィエD2 host was obtained. It was shown that the orientation of the pyrrole guest is maintained in spite of its large reorientational motion like that found in its beazene clathrate, and a cooperative phenomenon coming from a host-guest interaction was found out.
Guest molecular motion as a simple thermally activated process has been a target of this research so far. In a next step, phenomena, which appear as a result of cooperative effect of host-guest interaction coming from guest molecular motion and flexibility of host, will become a main target. Less

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] S. Nishikiori: "Out-of-Plane Motion of the Guest Benzene Molecule Trapped in a [Cd(dmen)_2(CN)]_2[Cd(CN)_4]Host"J. Inclusion Phenom.. 34. 331-343 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Nishikiori: "Guest Molecular Motion of [N(CH_3)_4][Cd_3(CN)_7 Benzene, Toluene and Ethylbenzene Clathrates as Studied by ^2H-NMR"J. Phys. Chem., A. (印刷中). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Nishikiori: "Out-of-Plane Motion of the Guest Benzene Molecule Trapped in a [Cd(dmen)ィイD22ィエD2(CN)]ィイD22ィエD2[Cd(CN)ィイD24ィエD2] Host as Studied by H-NMR."J. Inclusion Phenom.. 34. 331-343 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Nishikiori: "Guest Molecular Motion of [N(CHィイD23ィエD2)ィイD24ィエD2][CdィイD23ィエD2(CN)ィイD27ィエD2] Benzene, Toluene and Ethylbenzene Clathrates as Studied by ィイD12ィエD1H-NMR"J. Phys. Chem., A. (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Nishikiori: "Out-of-Plane Motion of the Guest Benzene Molecule Trapped in a [Cd(dmen)_2(CN)]_2[Cd(CN)_4] Host as Studied by ^2H-NMR"J. lnclusion Phenom.. 34. 331-343 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] S. Nishikiori: "Guest Molecular Motion of[N(CH_3)_4][Cd_3(CN)_7]Benzene, Toluene and Ethylbenzene Clathrates as Studied by _2H-NMR"J. Phys. Chem., A. (印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] SHIN-ICHI NISHIKIORI: "In-plane and Out-of-plane Motion of Benzene Trapped in a Cd(py)_2{Ag(CN)_2}_2 Host as Studied by Deuterium NMR" J.Incl.Phenom.Mol.Recognit,Chem.27. 233-243 (1997)

    • Related Report
      1997 Annual Research Report

URL: 

Published: 1997-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi