Affinity of aquopentaammineruthenium(II) and -(III) for esters of amino acids

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Title:	Affinity of aquopentaammineruthenium(II) and -(III) for esters of amino acids
Authors:	Yeh, A., Taube, H.
Contributors:	Department of Chemistry, Tunghai University
Date:	1980
Issue Date:	2013-05-14T09:02:01Z (UTC)
Abstract:	The paper is concerned with the change in affinity for amines of Ru(NH3)5H2O2+ and Ru(NH3)5H2O3+ when hydrogen on NH3 is progressively replaced by alkyl groups. A kinetic method was used to determine the association quotients for Ru(II), and electrochemical measurements then fix those for Ru(III). The equilibrium quotient at 25?C for the association of Ru(II) with the ligands NH3, ethyl glycinate, methylamine, and methyl sarcosinate are 3.5 ? 104 (earlier work, corrected for the statistical factor), 3.2 ? 103, 3.5 ? 103, and 50 ? 10 M-1, respectively, and for Ru(III) are 3.6 ? 105, 5.5 ? 102, 3.5 ? 103, and 2.0 M-1. The decrease in affinity for Ru(II) registered when H on ammonia is replaced by an alkyl group is in marked contrast to the effect of the same change when sulfur is the donor atom. ? 1980 American Chemical Society.
Relation:	Inorganic Chemistry Volume 19, Issue 12, 1980, Pages 3740-3742
Appears in Collections:	[化學系所] 期刊論文

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