Engineering of non-interpenetrating 3-D and 2-D networks and guest adsorption based on 4,4′-di(3-methyl)pyridyl sulfide copper(II) complexes

Two new coordination compounds, [Cu(L)(2)SO4].0.5H(2)O .0.5CH(2)Cl(2) (1) and [Cu(L)(2)(SCN)(2)]. 3CHCl(3) (2), were synthesized and structurally characterized. The molecular architectures of the 4,4'-di(3-methyl) pyridyl sulfide (L) coordination polymer networks are anion dependent. The molecular architecture of 1 is a 3-D non-interpenetrating network, SO42- serving as a bridging ligand to connect two copper ions resulting in a rhombic box with a volume of 793 Angstrom (3). While 2 is a 2-D planar network with SCN- acting as a mono-coordinating ligand. Guest adsorption experiments show that 1 prefers to selectively adsorb 4-chlorophenol rather than nitrobenzene and benzophenone and DMF. In contrast, 2 does not adsorb any of the above guest species.