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http://dx.doi.org/10.5012/bkcs.2009.30.10.2341

Ring-Conformations via the Competition of Electrostatic Interaction and Argentophilic Interaction. Cyclodimeric Structures of Silver Trifluoromethanesulfonate Containing Isonicotinate Ester Ligands  

Kim, Chi-Won (Department of Chemistry, Pusan National University)
Kim, Cho-Rong (Department of Chemistry, Pusan National University)
Noh, Tae-Hwan (Department of Chemistry, Pusan National University)
Jung, Ok-Sang (Department of Chemistry, Pusan National University)
Publication Information
Bulletin of the Korean Chemical Society / v.30, no.10, 2009 , pp. 2341-2344 More about this Journal
Abstract
Metallacyclodimers, [Ag(OTf)($L1)]_2$ and [Ag($L2)]_2(OTf)_2$ (L1 = 1,3-dibromo-2,2-bis[(isonicotinoyloxy)methyl] propane; L2 = 2,5-dimethyl-2,5-bis(isonicotinoyloxy)hexane) were constructed and characterized. The crystal structure of [Ag(OTf)($L1)]_2$ reveals a 32-membered cyclodimer, whereas that of [Ag($L2)]_2(OTf)_2$ shows a linked 34-membered cyclodimer chain via intercyclic argentophilic (Ag…Ag) interactions. [Ag(OTf)($(L1)]_2$ affords “intramolecular $\pi-\pi$ interaction cyclodimer” whereas [Ag($L2)]_2(OTf)_2$ produces a racemic mixture of “twisted cyclodimer”. Ring-conformation of the cyclodimers was affected via the competition of electrostatic interaction and argentophilic interaction.
Keywords
Isonicotinoyl ligands; Metallacyclodimers; Ring-conformation; Silver(I) complexes;
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