Bis[μ-N-(pyridin-2-ylmethyl)pyridin-3-amine-κ²N:N′]disilver(I) bis(perchlorate) dimethyl sulfoxide disolvate

Abstract

In the binuclear title compound, [Ag2(C11H11N3)2](ClO4)2·2C2H6SO, the complex cation is centrosymmetric, with the unique AgI cation coordinated by two pyridine N atoms from two symmetry-related N-(pyridine-2-ylmeth­yl)pyridine-3-amine ligands in a geometry slightly distorted from linear [N—Ag—N = 170.78 (9)°], resulting in the formation of a 16-membered cyclic dimer. The two pyridine rings coordinating to the AgI atom are almost perpendicular to each other [dihedral angle = 87.73 (10)°]. Inter­molecular Ag⋯O inter­actions [3.149 (3) and 2.686 (3) Å], N—H⋯O and C—H⋯O hydrogen bonds and C—H⋯π inter­actions between the cyclic dimers and the anions or the solvent mol­ecules lead to the formation of a three-dimensional supra­molecular network.

Role and Effect of Anions in the Construction of Silver Complexes Based on a Pyridylimidazole Ligand with L-Type Coordination Vectors and Their Photoluminescence Properties

“…The single-crystal structure analysis showed that 3 is a fascinating cyclic tetramer of formula [Ag 4 (pyim) 4 ]­·(CF 3 SO 3 ) 4 that is built up from the alternating connection of four Ag­(I) ions to four ligands. Although examples of cyclic dimers consisting of two ligands and two Ag­(I) ions, as in the case of complex 1 , are common in the literature, − cyclic tetramers composed of four ligands and four silver­(I) ions are unusual. ,− The cyclic tetramer is located around a crystallographic inversion center. Therefore, the asymmetric unit is composed of two Ag­(I) ions (Ag1 and Ag2), two pyim ligands, and two trifluorosulfonate anions.…”