Coordination networks constructed with supramolecular synthon RX–CC⊃Agn (n = 4, 5; RX = halophenyl)

Eight new silver(I) double salts: AgL1·2AgCF3COO (1), AgL1·3AgNO3 (2), 2AgL2·5AgCF3COO·2CH3CN·H2O (3), 4AgL3·6AgCF3COO·5CH3CN (4), 4AgL4·6AgCF3COO·5CH3CN (5), 2AgL5·4AgCF3COO·NC(CH2)4CN (6), 2AgL5·4AgCF3COO·2CH3CN (7) and AgL6·2CF2(CF2COOAg)2·2CH3CN (8) (L1 = 4-iodophenylethynide; L2 = 3,4-dichlorophenylethynide; L3 = 3-chlorophenylethynide; L4 = 3-bromophenylethynide; L5 = 2-chlorophenylethynide; L6 = 2-fluorophenylethynide) have been synthesised and characterized by X-ray crystallography. All compounds contain the silver–halophenylethynide supramolecular synthon RX−CC⊃Agn (n = 4, 5). In particular, the three-dimensional supramolecular structures in 1 and 2 are stabilized by strong Ag⋯I interactions, while that in 3 is consolidated by both Ag⋯Cl and van der Waals type F⋯Cl interactions. In isomorphous compounds 4 and 5, the presence of respective F⋯Cl or F⋯Br contact contributes to the stability of the network. The silver aggregates in 6, 7 and 8 are stabilized by Ag⋯Cl or Ag⋯F interactions between the ortho-halo substituent and the Agn basket.

Silver–halophenylethynide Supramolecular Synthon. In eight new silver(I)–ethynide complexes constructed with the RX–CC⊃Agn (n = 4, 5; RX = halophenyl) supramolecular synthon, various types of silver⋯halogen and halogen⋯halogen interactions are found to contribute to stabilization of their network structures.Figure optionsDownload as PowerPoint slide