Diverse intermolecular interactions in metal-organic frameworks constructed with the new supramolecular synthon Agn-L-Agn (n = 4, 5) (H2L = 2,2′-bis(prop-2-ynyloxy)biphenyl)

Abstract

The three silver(I) coordination polymers [(Ag2L)-(AgNO 3)6(H2O)] (1), [(Ag2L) 0.5(AgCF3CO2)4(H2O) 2] (2), and [(Ag2L)(AgCF3CO2) 7(CH3CN)3(μ2-H2O)] (3) have been constructed from the flexible multifunctional dianionic ligand L (H2L = 2,2′-bis(prop-2-ynyloxy)biphenyl), providing experimental evidence of coexisting uncommon intermolecular interactions (cation-π and π-π in 1; cation-π and anion-π in 2; C≡N⋯π and C-H⋯π in 3) that stabilize their framework structures. © 2008 American Chemical Society.