Pyramidal Structures: New Type of Cluster Compounds

2017 Fiscal Year Annual Research Report

• Project/Area Number: 15K05413
• Research Institution: University of Tsukuba
• Principal Investigator: Lee Vladimir 筑波大学, 数理物質系, 講師 (90375410)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: cluster / group 14 element / group 13 element / group 15 element / housene / pyramidane / cyclobutadiene dianion / X-ray crystallography

Outline of Annual Research Achievements

The research purpose of this project during the final year was the synthesis of novel class of highly strained polyhedral clusters, pyramidanes, very attractive for both fundamental studies and material science.
In accord with the proposed plan, during this year we synthesized novel cationic pyramidanes with the apical heavier group 15 elements, as well as unprecedented neutral bis(housene)-type compounds. The structures of all newly synthesized clusters were studied by modern physico-chemical methods and computationally. Specific reactivity and potential applications of these compounds have also been investigated.

Research Products

• [Journal Article] The Study of Bonding in Pyramidanes [(Me3Si)4C4]E (E = Ge, Sn, Pb) by Optical (Raman, UV-vis) Spectroscopy and Quantum-Chemical Methods (2017)
  • Author(s): L. A. Leites, R. R. Aysin, S. S. Bukalov, V. Ya. Lee, H. Sugasawa, A. Sekiguchi
  • Journal Title: J. Mol. Struct. Volume: 1130 Pages: 775-780
  • DOI: 10.1016/j.molstruc.2016.11.001
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Hybrid Group 15(E15)-Group 14(E14) Element Cationic Pyramidal Structures E15[E144(SiR3)4]+: A DFT Study (2017)
  • Author(s): O. A. Gapurenko, V. Ya. Lee, R. M. Minyaev, V. I. Minkin, A. Sekiguchi
  • Journal Title: Tetrahedron Lett. Volume: 58 Pages: 2054-2057
  • DOI: 10.1016/j.tetlet.2017.04.040
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Bis(stibahousene) (2017)
  • Author(s): V. Ya. Lee, K. Ota, Y. Ito, O. A. Gapurenko, A. Sekiguchi, R. M. Minyaev, V. I. Minkin, H. Gornitzka
  • Journal Title: J. Am. Chem. Soc. Volume: 139 Pages: 13897-13902
  • DOI: 10.1021/jacs.7b07712
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Pyramidanes (2017)
  • Author(s): V. Ya. Lee, O. A. Gapurenko, A. Sekiguchi, R. M. Minyaev, V. I. Minkin
  • Organizer: 19th IUPAC International Symposium on Organometallic Chemistry Directed Towards Organic Synthesis (OMCOS-19) (Jeju, South Korea)
  • Int'l Joint Research
• [Presentation] Pyramidanes (2017)
  • Author(s): V. Ya. Lee, O. A. Gapurenko, A. Sekiguchi, R. M. Minyaev, V. I. Minkin
  • Organizer: 22nd International Conference on Organometallic Chemistry (EuCOMC-XXII) (Amsterdam, The Netherlands)
  • Int'l Joint Research
• [Presentation] Pyramidanes (2017)
  • Author(s): V. Ya. Lee
  • Organizer: Russian-French Workshop on Hyper- and Hypocoordinated Compounds of the Group 14 Elements (Moscow, Russia)
  • Int'l Joint Research / Invited
• [Presentation] Pyramidanes (2017)
  • Author(s): V. Ya. Lee
  • Organizer: VII International Symposium “Chemistry and Chemical Education” (Vladivostok, Russia)
  • Int'l Joint Research / Invited
• [Presentation] Pyramidanes (2017)
  • Author(s): V. Ya. Lee
  • Organizer: “INEOS OPEN CUP” Conference (Moscow, Russia)
  • Int'l Joint Research / Invited
• [Presentation] Invited Seminars (2017)
  • Author(s): V. Ya. Lee
  • Organizer: University of Muenster and University of Goettingen (Germany)
  • Int'l Joint Research / Invited
• [Presentation] Synthesis of Pyramidanes with the Group 13 Element at the Apex (2017)
  • Author(s): H. Sugasawa, V. Ya. Lee, A. Sekiguchi, O. A. Gapurenko, R. M. Minyaev, V. I. Minkin
  • Organizer: 97th Annual Meeting of The Chemical Society of Japan (Yokohama, Japan)
• [Book] Organosilicon Compounds, Volume 1: Theory and Experiment (Synthesis) (2017)
  • Author(s): V. Ya. Lee
  • Total Pages: 734
  • Publisher: Elsevier/Academic Press
  • ISBN: 0128019816
• [Book] Organosilicon Compounds, Volume 2: Experiment (Physico-Chemical Studies) and Applications (2017)
  • Author(s): V. Ya. Lee
  • Total Pages: 397
  • Publisher: Elsevier/Academic Press
  • ISBN: 0128142138