Dinuclear and polynuclear silver(I) saccharinate complexes with 1,3-diaminopropane and N-methylethylenediamine constructed from Ag center dot center dot center dot C interactions
Abstract
New dinuclear and polynuclear Ag(I) complexes with the formula of [Ag-2(sac)(2)(pen)(2)] (1) and [Ag-2(sac)(2)(nmen)](n) (2), (sac = saccharinate, pen = 1,3-diaminopropane, nmen = N-methylethylenediamine) have been synthesized and characterized by IR spectroscopy and thermal (TG/DTG, DTA) analysis. In addition, their structures were determined by single crystal X-ray diffraction technique. In 1, Ag(I) ions are doubly bridged by two pen ligands, besides pen ligands exhibit an interesting coordination mode by binding bridging ligand. Sac ligands connect to silver atom through its imino N atom. Furthermore, each Ag(I) ion exhibits a T-shaped coordination geometry. In 2, Ag(I) coordination environment is again T-shaped, including weak Ag-Ag bonds. The sac exhibits bidentate bringing mode, involving its imino nitrogen and carbonyl oxygen atoms, besides, bridging of Ag(I) centres by sac ligands results in argentophilic contacts. The polymeric units are assembled into two-dimensional networks by hydrogen bonds, C-H center dot center dot center dot pi stacking interactions, weak Ag center dot center dot center dot C-sac (eta(2)) and Ag center dot center dot center dot O interactions. (C) 2009 Elsevier B.V. All rights reserved.
Source
Journal of Organometallic ChemistryVolume
694Issue
26Collections
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