Six metal–organic architectures from a 5-methoxyisophthalate linker: assembly, structural variety and catalytic features

A methoxy-functionalized isophthalic acid, 5-methoxy isophthalic acid (H(2)mia), was used a versatile linker for assembling six new metal(ii) compounds under hydrothermal conditions. The obtained products were [Cu(2)(μ(2)-mia)(2)(phen)(2)(H(2)O)(2)]·2H(2)O (1), [Mn(μ(3)-mia)(phen)](n) (2), [Co(μ(2)-mia)(2,2′-bipy)(H(2)O)](n)·nH(2)O (3), [Co(μ(3)-mia)(μ(2)-4,4′-bipy)](n)·nH(2)O (4), [Co(μ(3)-mia)(py)(2)](n) (5), and [Cd(μ(2)-mia)(py)(H(2)O)(2)](n)·nH(2)O (6), where phen(1,10-phenanthroline), 2,2′-bipy(2,2′-bipyridine), 4,4′-bipy(4,4′-bipyridine) or py(pyridine) were incorporated as auxiliary ligands. The crystal structures of 1–6 range from 0D (1) and 1D (2, 3, 5, 6) CPs to a 2D network (4) with a variety of topological types. The catalytic behavior of 1–6 was studied in the cyanosilylation reaction between trimethylsilyl cyanide and aldehydes, resulting in up to 99% yields of products under optimized conditions. Various reaction parameters as well as catalyst recycling and substrate scope were investigated. This study widens the use of H(2)mia as a versatile dicarboxylate linker for assembling a diversity of functional metal–organic architectures with remarkable structural features and catalytic properties.