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2022 Fiscal Year Annual Research Report

Control of Charge Arrangement and Electronic Phase Transition in Molecular Crystals

Research Project

Project/Area Number 20K05448
Research InstitutionKyoto University

Principal Investigator

矢持 秀起  京都大学, 理学研究科, 名誉教授 (20182660)

Co-Investigator(Kenkyū-buntansha) 大塚 晃弘  京都大学, 理学研究科, 准教授 (90233171)
Project Period (FY) 2020-04-01 – 2023-03-31
Keywords電荷配置 / 分子性結晶 / 電子相転移 / 導電性 / 磁性
Outline of Annual Research Achievements

比較的電子受容性の弱い大環状化合物などをデカメチルクロモセン等の強力な還元剤により陰イオン化し、種々の塩を単結晶試料として得た。以下にいくつかの結果を記す。
テトラピリジルポルフィリン(Por)の陰イオンラジカルとテルビウム(Tb3+)の錯塩を反応させ、Por環が中性に戻った形で組み込まれた塩が得られた。TbはPor側鎖のピリジン窒素に配位し、PorとTbが2次元的な層状構造を形成していた。高スピンTb間に弱い反強磁性相互作用が見られた。
フタロシアニン(Pc)に4個の15-クラウン-5 (15C5)ユニットを組込んだ(15C5)4Pcを中心として、Pc-Tb-(15C5)4Pc-Tb-Pcの2階建て構造を持つ錯体を得た。結晶溶媒が含まれた単結晶試料と溶媒を含まない粉末試料が得られた。何れも単分子磁石としての挙動が見られたが、スピン反転障壁の大きさは後者の方が大きかった。また、SnCl2を中心に持ち分子周囲を塩素置換したPcを還元しPc部分が-4価となった塩も得られた。
6個のシアノ基を持つヘキサアザトリフェニレン(HAT)を用いて鉄(Fe2+)を含む塩を作製した。HAT3価ラジカル陰イオンのo-ビピリジル構造部分すべてにFeCl2が配位し、HAT : Fe = 1 : 3の組成を持つ陰イオンが生成した。HATと鉄のスピンが反強磁性的に相互作用し、3個の鉄上のスピンが総て平行な配置となる相互作用が見られた。低温ではS = 11/2の状態となった。
その他、C60陰イオンラジカル塩やフォトクロミック分子の開環状態に遷移金属を配位させた錯塩なども作製した。また、本研究開始以前に得られていたエチレンジオキシ置換TTFの誘導体の塩、(EDO-TTF-I)2ClO4が冷却に伴って示す半導体-金属-絶縁体転移について、特に最低温度領域での電子状態の検討を行った。

  • Research Products

    (11 results)

All 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (9 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 9 results,  Open Access: 1 results) Presentation (1 results)

  • [Int'l Joint Research] Institute of Solid State Physics, RAS/FRC Problem of Chem. Phys. MC, RAS(ロシア連邦)

    • Country Name
      RUSSIA FEDERATION
    • Counterpart Institution
      Institute of Solid State Physics, RAS/FRC Problem of Chem. Phys. MC, RAS
  • [Journal Article] Single-Molecule Magnets Based on Heteroleptic Terbium(III) Trisphthalocyaninate in Solvent-Free and Solvent-Containing Forms2023

    • Author(s)
      Faraonov Maxim A., Martynov Alexander G., Polovkova Marina A., Khasanov Salavat S., Gorbunova Yulia G., Tsivadze Aslan Yu., Otsuka Akihiro, Yamochi Hideki, Kitagawa Hiroshi, Konarev Dmitri V.
    • Journal Title

      Magnetochemistry

      Volume: 9 Pages: 36 /1-12

    • DOI

      10.3390/magnetochemistry9020036

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A dimer of the negatively charged carbonyl cluster {Ir4(CO)11-}2 bonded by a single Ir-Ir bond, and comparison with the singly bonded (C60-)2 dimer.2023

    • Author(s)
      Sobov Pavel A., Shestakov Alexander F., Kuzmin Alexey V., Khasanov Salavat S., Otsuka Akihiro, Yamochi Hideki, Kitagawa Hiroshi, Konarev Dmitri V.
    • Journal Title

      Zeitschrift fur anorganische und allgemeine Chemie

      Volume: 649 Pages: e202200368/1-9

    • DOI

      10.1002/zaac.202200368

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Binuclear coordination complex of open merocyanine form of photochromic spiropyran with MnII (hfac)2 having high spin (S = 5) ground state2023

    • Author(s)
      Osipov Nikita G., Faraonov Maxim A., Shestakov Alexander F., Mikhailenko Maxim V., Kuzmin Alexey V., Khasanov Salavat S., Otsuka Akihiro, Yamochi Hideki, Kitagawa Hiroshi, Konarev Dmitri V.
    • Journal Title

      New Journal of Chemistry

      Volume: 47 Pages: 5470~5476

    • DOI

      10.1039/d3nj00058c

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Heterotrimetallic paramagnetic complex of ring reduced tin(II) hexadecachlorophthalocyanine2023

    • Author(s)
      Romanenko Nikita R., Faraonov Maxim A., Osipov Nikita G., Kuzmin Alexey V., Khasanov Salavat S., Otsuka Akihiro, Yamochi Hideki, Kitagawa Hiroshi, Konarev Dmitri V.
    • Journal Title

      New Journal of Chemistry

      Volume: 47 Pages: 6924~6931

    • DOI

      10.1039/d3nj00506b

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Weak Antiferromagnetic Exchange and Ferromagnetic Alignment of FeII (S=2) Spins in Differently Charged {HAT・(FeIICl2)3}n (n = 2- and 3-) Assemblies of Hexaazatriphenylenes (HAT)2022

    • Author(s)
      Mikhailenko Maxim V., Khasanov Salavat S., Shestakov Alexader F., Kuzmin Aleksey V., Otsuka Akihiro, Yamochi Hideki, Kitagawa Hiroshi, Konarev Dmitri V.
    • Journal Title

      Chemistry - A European Journal

      Volume: 28 Pages: e202104165 /1-8

    • DOI

      10.1002/chem.202104165

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Trinuclear coordination assemblies of low-spin dicyano manganese(II) (S = 1/2) and iron(II) (S = 0) phthalocyanines with manganese(II) acetylacetonate, tris(cyclopentadienyl)gadolinium(III) and neodymium(III)2022

    • Author(s)
      Romanenko Nikita R., Kuzmin Alexey V., Mikhailenko Maxim V., Faraonov Maxim A., Khasanov Salavat S., Yudanova Evgeniya I., Shestakov Alexander F., Otsuka Akihiro, Yamochi Hideki, Kitagawa Hiroshi, Konarev Dmitri V.
    • Journal Title

      Dalton Transactions

      Volume: 51 Pages: 9770~9779

    • DOI

      10.1039/d2dt01052f

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] New HATNA(CN)6 ligand in the design of dianion magnetic assemblies with lanthanides {Cryptand(K+)}2{HATNA(CN)6・3LnIII(TMHD)3}2- (Ln = Gd, Tb and Dy)2022

    • Author(s)
      Mikhailenko Maxim V., Ivanov Vladislav V., Kuzmin Alexey V., Faraonov Maxim A., Shestakov Alexander F., Khasanov Salavat S., Otsuka Akihiro, Yamochi Hideki, Kitagawa Hiroshi, Konarev Dmitri V.
    • Journal Title

      Polyhedron

      Volume: 228 Pages: 116186~116186

    • DOI

      10.1016/j.poly.2022.116186

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Crystalline paramagnetic supramolecular 2D-polymer of the tetra(4-pyridyl)porphyrin and terbium(III) complex2022

    • Author(s)
      Nazarov Dmitry I., Faraonov Maxim A., Kuzmin Alexey V., Khasanov Salavat S., Otsuka Akihiro, Yamochi Hideki, Kitagawa Hiroshi, Konarev Dmitri V.
    • Journal Title

      Dalton Transactions

      Volume: 51 Pages: 16921~16925

    • DOI

      10.1039/d2dt03170a

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Negatively Charged Iron-Bridged Fullerene Dimer {Fe(CO)2-μ2-η2,η2-C60}2 2-2022

    • Author(s)
      Faraonov Maxim A., Kuzmin Alexey V., Khasanov Salavat S., Shestakov Alexander F., Otsuka Akihiro, Yamochi Hideki, Kitagawa Hiroshi, Konarev Dmitri V.
    • Journal Title

      Inorganic Chemistry

      Volume: 61 Pages: 20144~20149

    • DOI

      10.1021/acs.inorgchem.2c03595

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 有機導体(EDO-TTF-I)2ClO4 の第一原理計算と秩序状態の解析2023

    • Author(s)
      川村 泰喜, 橋本 顕一郎, 吉見 一慶, 石川 学, 中野 義明, 大塚 晃弘, 矢持 秀起, 小林 晃人
    • Organizer
      日本物理学会2023年春季大会

URL: 

Published: 2023-12-25  

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