Syntheses and Structural Characterization of Four New Silver(I) Complexes with the N,N′(O)‐bidentate Bridging Ligands

Abstract

AbstractFour new bridged silver(I) complexes, namely [Ag2(μ2‐teda)(μ2‐fbc)2] (1), [Ag2(μ2‐1,6‐dah)2](bpdc)·4H2O (2), [Ag2(μ2‐2‐ap)(2‐ap)(bnb)]·0.34H2O (3), [Ag2(μ2‐pyc)2(2‐apy)2]·0.5H2O (4), have been synthesized and characterized by elemental analysis and crystallographic methods [fbc = 4‐fluorobenzoate, teda = triethylenediamine (1); bpdc = biphenyl‐4,4′‐dicarboxylate, 1,6‐dah = 1,6‐diaminohexane (2); bnb = 3,5‐binitrobenzoate, 2‐ap = 2‐aminopyrimidine (3); pyc = 3‐pyridinecarboxylate acid, 2‐apy = 2‐aminopyridine (4)]. Complex 1 contains a 1D linear chain paralleling to the c‐axis, whereas in complex 2 silver(I) atoms were bridged by the 1,6‐dah ligand into a zigzag chain, further giving a 1D ribbon by weak Ag···Ag interactions. Complex 3 consists of a dinuclear silver(I) [Ag2(μ2‐2‐ap)(2‐ap)(bnb)] moiety and a lattice water molecule, forming a 3D network via a number of hydrogen‐bonding interactions such as N–H···O, N–H···N and C–H···O hydrogen bond and other weak interactions such Ag···Ag, Ag···N, N···O as well as O···O interaction. Similar to 3, the asymmetric unit of 4 consists of one dinuclear silver(I) [Ag2(μ2‐pyc)2(2‐apy)2] moiety and half lattice water molecule, further generating a tetranuclear silver(I) {[Ag2(μ2‐pyc)2(2‐apy)2]2·H2O} moiety. These moieties construct a 3D supramolecular network structure of 4 through N–H···O, O–H···O and C–H···O hydrogen bonds as well as other weak interactions such as Ag···O and N···O interactions.