Schrock-Type Silylene/Germylene Complexes of Transition Metals: On the Way to the Si or Ge Versions of Metathesis Process
| Project/Area Number |
24550038
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Organic chemistry
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| Research Institution | University of Tsukuba |
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Principal Investigator |
LEE Vladimir 筑波大学, 数理物質系, 講師 (90375410)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | cycloaddition / germylene / metathesis / Schrock complex / silylene / Schrock-type complexes / early transition metals / [2+2] cycloaddition / bicyclo[1.1.0]butane / metallacyclobutane / heavy Group 14 elements / Main Group Element / Transition Metal / Schrock-type Complex / Lewis Base Ligand / Titanium / Silylidene / Double Bond / Bond Polarization |
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| Outline of Final Research Achievements |
Metathesis of unsaturated hydrocarbons is among the most technologically useful alkene transformations. The Si and Ge variations of the metathesis represent a new promising route for the synthesis of the highly reactive multiply-bonded organosilicon and organogermanium compounds as precursors for the advanced materials of the new generation. In this project we developed the first examples of the Schrock-type alkylidene complexes of Si and Ge, namely, silylidenes and germylidenes, of the early transition metals. Thus, stable silylene and germylene complexes of the group 4 metals were prepared, isolated, structurally characterized, and computationally studied. All data support classification of such complexes as Schrock-type silylidenes and germylidenes, which react with unsaturated substrates (alkynes, alkenes, nitriles) forming the corresponding [2 + 2] cycloadducts, whose particular structures and cycloreversion were studied both experimentally and computationally.
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Report
(4 results)
Research Products
(38 results)
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[Presentation] Bis(stibahousene).2015
Author(s)
O. A. Gapurenko, V. I. Minkin, R. M. Minyaev, V. Ya. Lee, Y. Ito, A. Sekiguchi,
Organizer
XII International Workshop on Magnetic Resonance (Spectroscopy, Tomography and Ecology)
Place of Presentation
Rostov-on-Don, Russia
Year and Date
2015-03-02 – 2015-03-07
Related Report
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[Presentation] Pyramidanes.2013
Author(s)
Y. Ito, V. Ya. Lee, A. Sekiguchi, H. Gornitzka, O. A. Gapurenko, V. I. Minkin, R. M. Minyaev,
Organizer
The 14th International Conference on the Coordination and Organometallic Chemistry of Germanium, Tin and Lead (GTL 2013)
Place of Presentation
Cape Breton Island, Canada
Related Report
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[Presentation] Hybrid pyramidanes.2013
Author(s)
V. Ya. Lee, Y. Ito, A. Sekiguchi, O. A. Gapurenko, V. I. Minkin, R. M. Minyaev,
Organizer
XI International workshop on magnetic resonance
Place of Presentation
Rostov-on-Don, Russia
Related Report
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[Presentation] Pyramidanes.2012
Author(s)
Y. Ito, V. Ya. Lee, A. Sekiguchi, O. A. Gapurenko, V. I. Minkin
Organizer
4th Asian Silicon Symposium (ASiS-4)
Place of Presentation
Tsukuba, Japan
Related Report
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