Di- and tetranuclear silver (I)-saccharinate complexes with 2-pyridineethanol and 2-pyridinepropanol: Syntheses, crystal structures, spectroscopic and thermal analyses of [Ag2(sac)2(pyet)2] and [Ag4(sac)4(pypr)2]

Two silver (I) complexes of saccharin with 2-pyridineethanol (pyet) and 2-pyridinepropanol (pypr) are reported. In [Ag2(sac)2(pyet)2], two monomeric [Ag(sac)2(pyet)] units are doubly bridged by the sulfonyl oxygen atoms of the sac ligands, forming an [Ag2(sac)2(pyet)2] dimer, in which each silver (I) centre is three coordinate with a T-shaped coordination. The tetranuclear complex, [Ag4(sac)4(pypr)2], is achieved by bridging of [Ag2(sac)2] with two [Ag(sac)(pypr)] units through the sulfonyl oxygen atoms of the sac ligands. The two silver (I) ions in the centre with a short Ag-Ag bond distance of 2.8480(13) Å exhibit a T-shaped geometry with three sac ligands, while the two terminal silver (I) ions are coordinated by a sac ligand and a pypr ligand in a near linear geometry.