Coordination networks constructed with the multinuclear silver-ethynide supramolecular synthon 4-nitrophenyl-C[triple bond]C subset Ag(n) (n = 3, 4, 5).
A series of thirteen new silver(I) double and multiple salts containing 4-nitrophenylethynide (L), namely AgL.4AgCF3COO.CH3CN (1), AgL.5AgCF3COO.3CH3CN (2), 3AgL.4AgCF3COO.2CH3CN (3),3AgL.7AgCF3COO.6CH3CN (4), AgL.3AgC2F5COO.CH3CN (5), 4AgL.4AgC3F7COO.3CH3CN (6),2AgL.4AgCF3COO.NC(CH2)2CN (7), AgL.3AgCF3COO.CH3CN.0.5NC(CH2)4CN (8),AgL.3AgC2F5COO.CH3CN.NC(CH2)4CN (9), 4AgL.12AgCF3COO.4(m-NCC6H4CN).H2O (10), AgL.2[CF2(CF2COOAg)2].4.5H2O (11), AgL.CF2(CF2COOAg)2.AgCF3COO.H2O (12) and AgL.CF2(CF2COOAg)2.AgC2F5COO.H2O (13), have been synthesized and characterized by X-raycrystallography. All these compounds contain the multinuclear silver-ethynide supramolecular synthonR-C[triple bond]C subset Agn (R = 4-nitrophenyl; n = 3, 4, 5). High-dimensional metal-organic frameworks areachieved in these complexes via the linkage of characteristic carboxylate-bridged infinite silver chainsby nitro-silver coordination or weak interactions. In addition, the nitrophenyl group exhibits itsversatile ability to form other intermolecular interactions such as nitro...nitro, pi...pi, and C-H...O hydrogen bonding to stabilize the network structure. Furthermore, several factors affecting thesupramolecular architectures, including the incorporation of nitriles and/or bidentateperfluorocarboxylates as co-existing ligands are also discussed.
Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, PR China.
Siegfried M J
SM
Wang
Liang
L
Zhao
Thomas C W
TC
Mak