Increasing Structural Dimensionality in Ag(I) Coordination Polymers Formed from the Same Flexible Multimodal Thioether Pyrazine Ligand
datasetposted on 04.05.2005 by Jarrod J. M. Amoore, Cory A. Black, Lyall R. Hanton, Mark D. Spicer
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Three coordination polymers were prepared by the reaction of a new flexible multimodal ligand, bis(2-pyrazylmethyl)sulfide (L), with AgX salts (X = BF4- or PF6-). The polymers showed an increasing dimensionality from 1-D to 2-D to 3-D, and the influence of solvent and anion on the formation and dimensionality of these coordination polymers was explored. A 1-D twisted ladder-like polymer with η-bound benzene and a 2:1 AgPF6-to-L ratio, 1·MeCN, was formed when benzene was present in the solvent mix. A 2-D undulating sheet with 4.8 topology and a 1:1 AgPF6-to-L ratio, 2, was formed when CH2Cl2 was present in the solvent mix. A 3-D network, 3, with two different 4.82 nets linked together by 4.85 bridging nodes was formed when a 1:1 AgBF4-to-L ratio was used and MeNO2 was present in the solvent mix. Coordination arrays 2 and 3 were found to be related topologically.