Bis{μ-3-[3-(2-pyridyl)pyrazol-1-ylmethyl]pyridine}disilver(I) bis(trifluoromethanesulfonate): effect of counter-anions on the self-assembly of coordination complexes

• Published in: Acta crystallographica. Section C, Crystal structure communications Vol. 64; no. 9; pp. m308 - m310
• Main Authors: Liu, Chun-Sen, Guo, Liang-Qi, Ma, Song-Tao, Hu, Min
• Format: Journal Article
• Language: English
• Published: 5 Abbey Square, Chester, Cheshire CH1 2HU, England International Union of Crystallography 01.09.2008; Wiley Subscription Services, Inc
• Subjects: Chemical compounds; Crystal structure; Crystallography; Geometry; Hydrogen bonds
• ISSN: 0108-2701; 1600-5759
• DOI: 10.1107/S0108270108024189

As part of a study on the effect of different counter‐anions on the self‐assembly of coordination complexes, a new dinuclear AgI complex, [Ag2(C14H12N4)2](CF3SO3)2, with the 3‐[3‐(2‐pyridyl)pyrazol‐1‐ylmethyl]pyridine (L) ligand was obtained through the reaction of L with AgCF3SO3. In this complex, each AgI center in the centrosymmetric dinuclear complex cation is coordinated by two pyridine and one pyrazole N‐atom donor of two inversion‐related L ligands in a trigonal planar geometry. This forms a unique box‐like cyclic dimer with an intramolecular nonbonding Ag...Ag separation of 6.379 (7) Å. Weak Ag...CF3SO3 and C—H...X (X = O and F) hydrogen‐bonding interactions, together with π–π stacking interactions, link the complex cations along the [001] and [10] directions, respectively, generating two different one‐dimensional chains and then an overall two‐dimensional network of the complex running parallel to the (110) plane. Comparison of the structural differences with previous findings suggests that the presence of different counter‐anions plays an important role in the construction of such supramolecular frameworks.