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－　　－22Takashi TSUNOProfessor, Department of Applied Molecular ChemistryTakashi Tsuno obtained his PhDs at the University of Shizuoka under the supervision of Prof. Dr. M. Sato in 2005 and at the University of Regensburg under the supervision of Prof. Dr. H. Brunner in 2007. Currently, he is a professor at Nihon University. Dr. Tsuno is a member of the American Chemical Society, the Chemical Society of Japan, the Society of Synthetic Organic Chemistry, Japan, and the Japanese Photochemistry Association. He has also been a contributor to Specialist Periodical Reports, Photochemistry of the Royal Society of Chemistry, since 2009. His research interests include synthesis and stereochemistry of chiral-at-metal compounds. Research Achievements1) Tsuno, T. Organic aspects: Photochemistry of Alkenes, Dienes, Polyenes (2016-2017), In Specialist Peri-odical Reports, Photochemistry, Eds. Albini, A.; Protti, S. 2018, Vol. 46, 78-115.2) Brunner, H.; Tsuno, T. The Chirality Chain in the Amino Acid Valine: How Configuration at the Cα Posi-tion through the OcisC＇CαN Torsional System Leads to Distortion of the Planar Group CαC’(Ocis)Otrans to a Flat Tetrahedron, ChemistryOpen 2018, 7, 696-700.3) Brunner, H.; Kitamura, H.; Tsuno, T. Kinetic and Thermodynamic Control of Nitrile Dissociation in the Complexes (RFe,RC)/(SFe,RC)-[CpFe(Prophos)NCR]X, X = I, PF6, by the Inductive Effect Organometallics 2018, 37, 1892-1899.4) Brunner, H.; Tsuno, T. Trend-Analysis of Solid State Structures: Low-Energy Conformational ‘Reactions’ Involving Directed and Coupled Movements in Half-Sandwich Compounds [CpFe(CO){C(=O)R}PPh3], ChemistryOpen 2018, 7, 313-318 (Front Cover Picture and Cover Profile).5) Brunner, H.; Balázs, G.; Tsuno, T.; Iwabe, H. PPh3 Propeller Diastereomers. The Bonding Motif PhPPh3 Face-on π-Ar in Half-Sandwich Compounds [(π-Ar)LL’MPPh3], ACS Omega 2018, 3, 982–990.6) Tsuno, T.; Sugiyama, Y.; Brunner, H.; Bodensteiner, M.; Lee, K. Synthesis and Structural Characteri-zation of Ni(II) Complexes with the Chiral CpH(PNMent) Tripod Ligand, J. Coord. Chem. 2017, 70, 3459–3470.7) Brunner, H.; Tsuno, T.; Bodensteiner, M.; Gärtner, S.; Miyahara, C.; Ito, S.; Kurosawa, T.; Koyama, K. Co-Crystallization of Half-Sandwich (RM,RC)/(SM,RC) Diastereomers in Single Crystals, Eur. J. Inorg. Chem. 2016, 5405–5410.In 2003, Dr. Tsuno spent a sabbatical year in the laboratory of Prof. H. Brunner in Regensburg, becoming aware of the fascinating field of chiral-at-metal compounds. After returning to Chiba, he continued research in organometallic stereochemistry with his group. Since then, active cooperation between the groups of Prof. Brunner and Dr. Tsuno has been established, resulting in yearly joint publications. Recently, the main research interest was the study of 16-electron intermediates of the type [CpMLL’], formed in the SN1-like dissociation of ligand L’’ from compounds such as [CpMLL’L’’]. These 16-electron intermediates are pyramidal and chiral at the metal atom, allowing substitution with retention of configuration at the metal atom, provided the pyramidal inversion is slow enough.