Silver(I) 3-aminomethylpyridine complexes, part 2: effect of ligand ratio, hydrogen bonding, and pi-stacking with an interacting anion

Inorganic Chemistry
Rodney P FeazellKevin K Klausmeyer

Abstract

Reaction of 3-aminomethylpyridine (3-amp) with silver(I) salts of triflate (OTf-) and trifluoroacetate (tfa-) produce a variety of multidimensional coordination networks whose structures depend on the stoichiometry of the components present. A 1:1 ratio of 3-amp to AgX produces a linear polymer, 1, when X = tfa- and a planar sheet, 2, when X = OTf-. Addition of a second equivalent of ligand increases the dimensionality of both structures by one to form a 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) link and forcing a 1:2:2 ratio of 3-amp to AgX to bipy. Compound 5, however, remains polymeric in nature due to the closed-shell Ag-Ag interactions of the planar metals holding the monomers together. Differences between structures of each ratio stem from the differences in basicity and in the extra degree of H-bonding ability that the OTf- anion has over tfa-.

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Citations

Aug 28, 2012·Inorganic Chemistry·Aurel TăbăcaruMario Cocchioni
Jan 1, 2008·Acta Crystallographica. Section E, Structure Reports Online·Hai-Yan LiuGuang-Hui Wang
Nov 14, 2014·Angewandte Chemie·Hubert Schmidbaur, Annette Schier
Oct 2, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Hua WuZhong-Min Su
Sep 23, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Hai-Yan LiuYing-Ying Liu
Dec 19, 2009·Chemistry : a European Journal·Claudio PettinariDaniela Pucci
Nov 2, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Graham A BowmakerAllan H White
Aug 10, 2007·Inorganic Chemistry·Hai-Yan LiuZhong-Min Su
Jul 16, 2021·Physical Chemistry Chemical Physics : PCCP·Scott G HarrounAlexis Vallée-Bélisle

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