Temperature- and pressure-dependent utilising dimensionality cross-over of Silver(I) complex supported by short Ag···Ag Interactions

AbstractTwo Ag(I)-based complexes, a mononuclear [Ag(PPh3)2(2tpCOO)]·EtOH (1) and a tetranuclear [Ag4(PPh3)4(2tpCOO)4] (2) have been prepared by a small tuning on the molar ratio of the reactants as well as the crystallisation method. A 1-D polymeric structure, [Ag2(PPh3)(2tpCOO)2]n (3) was obtained while the crystals of 2 were left under high temperature and autogenous pressure. The study suggests that the formation of 1-D polymeric structure is due to the removal along with the intramolecular and intermolecular reorganisation of the coordinated ligands that leads to dimensionality cross-over from 0-D to 1-D. The rearrangement of the ligands in 3 also resulted the metal centres moving closer together, being separated by 2.9626(3) A in 3, compared to 3.215(8) A in 2. The photoluminescence properties have been investigated showing that only complexes 2 and 3 exhibit this property at room temperature in solid state that is due to metal-to-ligand charge transfer.