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

Abstract

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, P 2 1 / 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, P 2 1 / 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, [Ag 2(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 O H⋯O hydrogen bonds, and weak π(sac)⋯ π(py) and π(py)⋯ π(py) interactions to form a three-dimensional supramolecular framework. In 2, [Ag 2(sac)(dmpy)] units are linked by the O sulfonyl bridges of sac, leading to one-dimensional polymeric chains, which are reinforced by the O H⋯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.