2003 Fiscal Year Final Research Report Summary
Development and Application of Novel Metal Catalysts with Steritically Hindered Ligand Systems
| Project/Area Number |
13555257
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
高分子合成
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| Research Institution | University of Tsukuba |
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Principal Investigator |
FUJISAWA Kiyoshi University of Tsukuba, Graduate School of Pure and Applied Science, Associate Professor, 化学系, 助教授 (10251670)
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| Co-Investigator(Kenkyū-buntansha) |
ODA Yoshiaki Sumitomo Chemical Co.Ltd, Researcher, 技術・経営企画室, 主席研究員
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| Project Period (FY) |
2001 – 2003
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| Keywords | homogeneous catalysis / transition metal complex / dioxygen complex / polymerization of olefins / spectroscopic anal analysis / electronic structure / reaction mechanism / catalytic reaction |
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| Research Abstract |
1.Manganese complexes have the catalytic reaction properties for olefin polymerization reactions. This metal has not been paid any attentions. In order to get more insight on the reaction mechanism, we are now synthesizing manganese(II)-alkyl complexes
2.We characterized the pyrazolato complexes with steritically hindered pyrazolate ions. By use of these complexes, we explored an asymmetric conjugate addition reaction
3.The μ,-η^2 : η^2-disulfido complex was obtained by the reaction of the copper(I) complex with elemental sulfur. Its detailed electronic structure was examined
4.Mononuclear iron(II) α-keto and carboxylate compounds were prepared as models for the active sites of nonheme iron oxygenases. The α-keto acid carboxylate complexes react 2 orders of magnitude faster than the carboxylate complexes, thus emphasizing the key role that the α-keto functionality plays in oxygen activation by α-keto acid-dependent iron enzymes
5.The copper(I) complexes were prepared by using the novel stertically hindered tirs(pyrazolyl)methane ligands. We also compared the structures and properties between hydrotris(pyrazolyl)borate systems and tris(pyrazolyl)methane systems
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