Synthesis and Crystal Structure of a Novel One-Dimensional Coordination Chain: [Ag(μ3-Hbpyca)(H2O)]n (bpyca = 2,2'-Bipyridine-3,3'-dicarboxylate)

Abstract

A novel one-dimensional silver(I) complex with monoprotonated2,2′-bipyridine-3,3′-dicarboxylate (Hbpyca), namely[Ag(μ₃-Hbpyca)(H₂O)]_n,has been prepared and characterized by X-ray crystallography. The titlecomplex crystallizes in the monoclinic space groupP2₁/cwith a 12.699(7), b 11.877(7),c 8.427(4) Å, b 107.53(1)°,V 1212.0(11) Å 3 , Z 4. Thecrystal structure comprises one-dimensional[Ag(μ₃-Hbpyca)(H₂O)]_nchains in which the metal atom is coordinated in a distorted tetrahedralAgN₂O₂ environment by one aqualigand, two pyridyl groups from two different Hbpyca ligands and one oxygenatom from the carboxy group of the third Hbpyca ligand. Each Hbpyca ligandacting in an unusual μ₃ mode(N,N′,O) bridges three Ag ^I atomsto form a one-dimensional polymeric chain. Adjacent chains are furtherinterlinked into a three-dimensional supramolecular array by the interchainhydrogen bonding and p–p interactions among the aqua ligands, pyridylgroups and carboxylato groups.