Silver(I)-saccharin coordination polymers with 2-pyridylmethanol and 2,6-pyridinedimethanol. Synthetic, spectroscopic, thermal and structural studies of [Ag(sac)(μ-mpy)]n and [Ag(μ-sac)(dmpy)]n

Two new coordination polymers of saccharinato-silver(I) complexes with 2-pyridylmethanol (mpy) and 2,6-pyridinedimethanol (dmpy), [Ag(sac)(μ-mpy)]n (1) and [Ag(μ-sac)(dmpy)]n (2), (sac = saccharinate), have been synthesized and structurally characterized by elemental analysis, IR, thermal analysis and single crystal X-ray diffraction. Crystal data: 1, monoclinic, P21/c, with a=13.3584(14)Å, b=8.3040(10)Å, c=13.0430(14)Å, β=106.227(3)°, Z=4; 2, monoclinic, P21/n, with a=7.3538(1)Å, b=13.0444(3)Å, c=15.7315(3)Å, β=98.8976(13)°, Z=4. In 1, [Ag2(sac)2(mpy)2] building blocks are connected into a two-dimensional framework by bridging OH groups of mpy, and they are further stacked by OH⋯O hydrogen bonds, and weak π(sac)⋯π(py) and π(py)⋯π(py) interactions to form a three-dimensional supramolecular framework. In 2, [Ag2(sac)(dmpy)] units are linked by the Osulfonyl bridges of sac, leading to one-dimensional polymeric chains, which are reinforced by the OH⋯O hydrogen bonds and π(sac)⋯π(py) interactions to generate a three-dimensional supramolecular network. The coordination polymers 1 and 2 exhibit three- and four- coordinated silver(I) centers, respectively, and the intra-chain Ag⋯Ag separations in 1 and 2 are 3.2988(4) and 4.1429(2) Å, respectively.