Characterization of ruthenium-dinitrogen tetraamine complexes by XAFS spectroscopy

Kaoru Okamoto; Toshikazu Takahashi; Kenji Kohdate; Hiroshi Kondoh; Toshihiko Yokoyama; Toshiaki Ohta

doi:10.1107/S0909049500015971

Characterization of ruthenium-dinitrogen tetraamine complexes by XAFS spectroscopy

Kaoru Okamoto, Toshikazu Takahashi, Kenji Kohdate, Hiroshi Kondoh, Toshihiko Yokoyama, Toshiaki Ohta

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

A reaction between N₂ and trans-Ru^IICl₂L (L=2,5,9,12-tetramethyl-2,5,9,12-tetraazatridecane) in aqueous solutions has been investigated by XAFS spectroscopy. Ru K-edge EXAFS clearly revealed that there exists an N₂-bridged binuclear complex and that the Ru-Ru distance is 4.96 Å with the coordination number of 0.5. The Ru K-edge energies of the N₂ complexes are closer to that of Ru^IIICl₂L⁺ rather than that of Ru^IICl₂L, indicating back donation from the Ru dπ to the N₂ π* orbitals.

Original language	English
Pages (from-to)	689-691
Number of pages	3
Journal	Journal of Synchrotron Radiation
Volume	8
Issue number	2
DOIs	https://doi.org/10.1107/S0909049500015971
Publication status	Published - 2001 Mar 1
Externally published	Yes

Keywords

Binuclear ruthenium complex
Dinitrogen bridging

ASJC Scopus subject areas

Radiation
Nuclear and High Energy Physics
Instrumentation

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10.1107/S0909049500015971

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title = "Characterization of ruthenium-dinitrogen tetraamine complexes by XAFS spectroscopy",

abstract = "A reaction between N2 and trans-RuIICl2L (L=2,5,9,12-tetramethyl-2,5,9,12-tetraazatridecane) in aqueous solutions has been investigated by XAFS spectroscopy. Ru K-edge EXAFS clearly revealed that there exists an N2-bridged binuclear complex and that the Ru-Ru distance is 4.96 {\AA} with the coordination number of 0.5. The Ru K-edge energies of the N2 complexes are closer to that of RuIIICl2L+ rather than that of RuIICl2L, indicating back donation from the Ru dπ to the N2 π* orbitals.",

keywords = "Binuclear ruthenium complex, Dinitrogen bridging",

author = "Kaoru Okamoto and Toshikazu Takahashi and Kenji Kohdate and Hiroshi Kondoh and Toshihiko Yokoyama and Toshiaki Ohta",

year = "2001",

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doi = "10.1107/S0909049500015971",

language = "English",

volume = "8",

pages = "689--691",

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TY - JOUR

T1 - Characterization of ruthenium-dinitrogen tetraamine complexes by XAFS spectroscopy

AU - Okamoto, Kaoru

AU - Takahashi, Toshikazu

AU - Kohdate, Kenji

AU - Kondoh, Hiroshi

AU - Yokoyama, Toshihiko

AU - Ohta, Toshiaki

PY - 2001/3/1

Y1 - 2001/3/1

N2 - A reaction between N2 and trans-RuIICl2L (L=2,5,9,12-tetramethyl-2,5,9,12-tetraazatridecane) in aqueous solutions has been investigated by XAFS spectroscopy. Ru K-edge EXAFS clearly revealed that there exists an N2-bridged binuclear complex and that the Ru-Ru distance is 4.96 Å with the coordination number of 0.5. The Ru K-edge energies of the N2 complexes are closer to that of RuIIICl2L+ rather than that of RuIICl2L, indicating back donation from the Ru dπ to the N2 π* orbitals.

AB - A reaction between N2 and trans-RuIICl2L (L=2,5,9,12-tetramethyl-2,5,9,12-tetraazatridecane) in aqueous solutions has been investigated by XAFS spectroscopy. Ru K-edge EXAFS clearly revealed that there exists an N2-bridged binuclear complex and that the Ru-Ru distance is 4.96 Å with the coordination number of 0.5. The Ru K-edge energies of the N2 complexes are closer to that of RuIIICl2L+ rather than that of RuIICl2L, indicating back donation from the Ru dπ to the N2 π* orbitals.

KW - Binuclear ruthenium complex

KW - Dinitrogen bridging

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Characterization of ruthenium-dinitrogen tetraamine complexes by XAFS spectroscopy

Abstract

Keywords

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