Abstract
isatin oxamohydrazide (L) reacted with the aqueous solution of silver nitrate at room temperature afforded the polymeric silver(1) nitrato complex, [Ag2L'(NO3)(2)](n), (1) of the azine ligand (L'). Similarly, the reaction of L with silver(I) perchlorate gave the [Ag2L'(CIO4)(2)](n), (2) coordination polymer. Careful inspection of the crystals from the nitrato complex preparation showed the presence of another crystalline product which is found to be lAg(Isatin-3-hydrazone)NO3], (3) suggesting that the reaction between silver(I) nitrate and L proceeds first by the hydrolysis of L to the isatin hydrazone which attacks another molecule of L to afford L'. Testing metal salts such as Ni2+, Co2- , Mn2- , Cu2+ and Cd2+ did not undergo any reaction with L either under the same reaction conditions or with heating under reflux up to 24h. Treatment of the warm alcoholic solution of L with few drops of 1 : 1 (v/v) hydrochloric acid gave the free ligand (L') in good yield. The [Ag2L'(NO3)(2)](n )complex forms a two-dimensional infinite coordination polymer, while the likg[Ag2L'(CIO4)(2)](n) forms one-dimensional infinite chains with an alternating silver-azine backbone. Quantitative analysis of the intermolecular & nbsp; interactions in their crystals is made using Hirshfeld surface analysis. Density functional theory studies were performed to investigate the coordination bonding in the studied complexes.