Silver(I)-organic networks constructed with flexible silver-ethynide supramolecular synthon o-, m-, p-Cl–C6H5OCH2CC⊃Agn (n = 4, 5)

A series of five silver coordination polymers [(AgL1)·(AgCF3COO)5·(H2O)3] (1), [(AgL1)2·(AgCF3COO)11·(H2O)6] (2), [(AgL2)·(AgCF3COO)3·(H2O)] (3), [(AgL3)·(AgCF3COO)4·(CH3CN)2] (4), and [(AgL3)·(AgCF3COO)7·(CH3CN)2·(H2O)2] (5) have been constructed from three flexible anionic ligands HL1, HL2, and HL3 (HL1 = 1-chloro-2-(prop-2-ynyloxy)benzene, HL2 = 1-chloro-3-(prop-2-ynyloxy)benzene, HL3 = 1-chloro-4-(prop-2-ynyloxy)benzene). In these compounds, the invariable appearance of the μ4- and μ5-ligation modes of the ethynide moiety affirms the general utility of the flexible silver-ethynide supramolecular synthon o-, m-, p-Cl−C6H5OCH2CC⊃Agn (n = 4, 5) in coordination network assembly. Among them, Ag⋯Cl interaction plays a vital role in assembling the supramolecular structures in complexes 1−3.

A series of three new ligands bearing terminal ethynide moieties attached via pendent arm to the ortho-, meta- and para-position of a chlorobenzene skeleton have been used in the syntheses of five silver(I) complexes. In these compounds, the invariable appearance of the μ4- and μ5-ligation modes of the ethynide moiety affirms the general utility of the multinuclear silver-ethynide supramolecular synthon o-, m-, p-Cl−C6H5OCH2CC⊃Agn (n = 4, 5) in coordination network assembly. Among these complexes, the supramolecular structures in complexes 1−3 are consolidated by Ag⋯Cl interaction, which is not observed in complexes 4 and 5.Figure optionsDownload as PowerPoint slideHighlights
► Silver-ethynide supramolecular synthon has been used to construct MOFs.
► Weak interactions play vital role in assembling supramolecular structures.
► Ag Cl interaction make their appearance in complexes 1−3.