Oxidation and Deprotonation of a Ruthenium(Ⅱ) Complex with Quinoline-2-carbaldehyde (Pyridine-2-carbonyl)hydrazone and Formation of Hydrazonato-Bridged Heterodimetallic Complexes
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<jats:title>Abstract</jats:title> <jats:p>Reactions of a ruthenium(II) complex containing quinoline-2-carbaldehyde (pyridine-2-carbonyl)hydrazone (HL), trans(P,P)-[RuCl2(PPh3)2(HL)] (1), and 3d-metal(II) chlorides resulted in heterodimetallic complexes, [RuCl2(PPh3)2(µ-L)MCl2] (2M, M = Mn, Fe, Co, Ni, Cu, and Zn), in which the deprotonated hydrazonate (L−) bridged two metal ions in the µ-1(Ru)κ2N,O:2(M)κ3N′,N′′,N′′′ mode. The coordination bond lengths around the Ru and M centers suggested that the oxidation states in the complexes 2M could be assigned as RuIII and MII; this was also supported by magnetic, electrochemical, and spectroscopic measurements. In addition, oxidation of complex 1 by (NH4)2[Ce(NO3)6] gave the corresponding mononuclear RuIII complex with the deprotonated hydrazonate, trans(P,P)-[RuCl2(PPh3)2(L)] (3). It is suggested that oxidation of the Ru center lead to the concerted deprotonation from the hydrazone ligand. Addition of excess HClO4 to complex 3 gave a doubly protonated RuIII complex, 4(ClO4)2; in this complex the hydrazonate moiety was not protonated, but both the quinolyl and pyridyl N atoms were protonated. Complexes 3 and 42+ could be interconverted by the addition of acid or base without changing the oxidation state of the Ru center.</jats:p>
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- Bulletin of the Chemical Society of Japan
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Bulletin of the Chemical Society of Japan 88 (3), 480-489, 2015-03
Tokyo : Chemical Society of Japan
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詳細情報 詳細情報について
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- CRID
- 1523669555326025472
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- NII論文ID
- 130004801840
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- NII書誌ID
- AA00580132
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- ISSN
- 00092673
- 13480634
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- NDL書誌ID
- 026243792
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- 本文言語コード
- en
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- NDL 雑誌分類
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- ZP1(科学技術--化学・化学工業)
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- データソース種別
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- NDL
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