Silver(I) 3-Aminomethylpyridine Complexes, Part 2: Effect of Ligand Ratio, Hydrogen Bonding, and -Stacking with an Interacting Anion

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• 作者：Rodney P. Feazell ; Cody E. Carson ; and Kevin K. Klausmeyer
• 刊名：Inorganic Chemistry
• 出版年：2006
• 出版时间：March 20, 2006
• 年：2006
• 卷：45
• 期：6
• 页码：2635 - 2643
• 全文大小：242K
• 年卷期：v.45,no.6(March 20, 2006)
• ISSN：1520-510X

文摘

Reaction of 3-aminomethylpyridine (3-amp) with silver(I) salts of triflate (OTf^-) and trifluoroacetate (tfa^-) producea variety of multidimensional coordination networks whose structures depend on the stoichiometry of the componentspresent. A 1:1 ratio of 3-amp to AgX produces a linear polymer, 1, when X = tfa^- and a planar sheet, 2, whenX = OTf^-. Addition of a second equivalent of ligand increases the dimensionality of both structures by one to forma two-dimensional sheet, 3, and a three-dimensional system, 4, for their respective anions. Addition of 2,2'-bipyridine(bipy) to solutions of any of the previous compounds produces the fixed-ratio complexes 5 (tfa^- salt) and 6 (OTf^-salt). The bipyridyl ligand halts the polymerization of compounds 1-4 by cutting the chain after each silver(I) linkand forcing a 1:2:2 ratio of 3-amp to AgX to bipy. Compound 5, however, remains polymeric in nature due to theclosed-shell Ag-Ag interactions of the planar metals holding the monomers together. Differences between structuresof each ratio stem from the differences in basicity and in the extra degree of H-bonding ability that the OTf^- anionhas over tfa^-.