単結晶中性子回折法の開発と高精度な水素原子位置の決定に基づいた構造化学研究

抄録

Single-crystal neutron structure analysis is a powerful technique to observe the position of hydrogen atoms in crystals with high accuracy and reliability because of its high sensitivity to hydrogen atoms. In Japan, the development of single-crystal neutron diffractometers for structure analysis has progressed since the 1990s at the JRR-3 research reactor. Subsequently, the construction of J-PARC MLF, a high intense spallation neutron source, started in the 2000s. The author has developed single-crystal neutron diffractometers at JRR-3 and MLF to make the single-crystal neutron structure analysis of organic and organometallic molecular crystals possible. In addition, the author has also been conducting research based on the reliable observation of hydrogen atoms in molecular crystals. This paper will review the recent development of single-crystal neutron diffractometers and studies in which hydrogen atoms play a crucial role.