New route of anion exchange reactions and physical properties of mixed anion compounds

• Project/Area Number: 15K17695
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo
• Principal Investigator: Hirai Daigorou 東京大学, 物性研究所, 助教 (80734780)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 複合アニオン化合物 / 陰イオン置換反応 / 酸フッ化物 / 酸窒化物 / カルボジイミド / 多色性 / 混合アニオン / 強相関電子系 / 低温合成

Outline of Final Research Achievements

We aimed at establishing a new route of anion exchange reactions for controlling physical properties of transition metal oxides and exploring novel properties of mixed-anion compounds. By using tetrafluoroethlene (teflon)/melamine as anion sources, we succeeded in performing anion exchange reactions. This method enabled us to synthesize various mixed-anion compounds including a new compound Lu2O2NCN. In addition, we investigated unique properties of mixed anion compounds and discovered a very strong pleochroism in a new mixed anion compound Ca3ReO5Cl2.

Research Products

• [Presentation] 金属カルボジイミド化合物における物質開発と磁性 (2017)
  • Author(s): 田中秀岳、平井大悟郎、広井善二
  • Organizer: 日本物理学会第72回年次大会
  • Place of Presentation: 大阪大学 (大阪府・豊中市)
  • Year and Date: 2017-03-17
• [Presentation] 異方的三角格子をもつ5d量子磁性体Ca3ReO5Cl2 (2017)
  • Author(s): 平井大悟郎、河村光晶、三澤貴宏、広井善二
  • Organizer: 日本物理学会第72回年次大会
  • Place of Presentation: 大阪大学 (大阪府・豊中市)
  • Year and Date: 2017-03-17
• [Presentation] "Visible” orbital state in an oxychloride (2017)
  • Author(s): 平井大悟郎、矢島健、金昌秀、秋山英文、河村光晶、三澤貴宏、阿部伸行、有馬孝尚、広井善二.
  • Organizer: 16th CEMS-QPEC Symposium on “Emergent Quantum Materials”
  • Place of Presentation: 東京大学 (東京都・文京区)
  • Year and Date: 2017-01-18
  • Int'l Joint Research
• [Presentation] 多色性で見る5d軌道 (2017)
  • Author(s): 平井大悟郎
  • Organizer: 新機能無機物質探索研究センター・シンポジウム
  • Place of Presentation: 東北大学 (宮城県・仙台市)
  • Invited
• [Presentation] "Visible” orbital state in a pleochroic oxychloride (2016)
  • Author(s): 平井大悟郎、矢島健、金昌秀、秋山英文、河村光晶、三澤貴宏、阿部伸行、有馬孝尚、広井善二.
  • Organizer: Workshop on “Solid-state chemistry for oxide and mixed-anion systems”
  • Place of Presentation: 京都大学 (京都府・宇治市)
  • Year and Date: 2016-12-06
  • Int'l Joint Research
• [Presentation] 多色性で見る5d軌道 (2016)
  • Author(s): 平井大悟郎、矢島健、金昌秀、秋山英文、河村光晶、三澤貴宏、広井善二.
  • Organizer: 日本物理学会 2016年秋季大会
  • Place of Presentation: 金沢大学 (石川県・金沢市)
  • Year and Date: 2016-09-13