Hydrogen-Bonded Molecular Ladders and Interlaced Networks in Complexes Built of V-Shaped Molecules 4,4′-Isopropylidenediphenol or 4,4′-Oxydibenzoic Acid with 4,4′-Bipyridine

The title compounds, C10H8N2 center dot C15H16O2 (1) and C10H8N2 center dot C14H10O5 (2), were synthesized by 4,4'-bipyridyl and two similar V-shaped molecules. The two complexes both crystallized in the same space group P2(1)/n with the crystal cell parameters: a = 16.0536(3) angstrom, b = 6.42730(1) angstrom, c = 21.2717(4) angstrom, beta = 102.330 degrees, V = 2144.21(7) angstrom(3), Z = 4 in compound 1 and a = 7.45020(10) angstrom, b = 10.0784(2) angstrom, c = 26.9430(5) angstrom, beta = 92.1140(10)degrees, V = 2021.67(6) angstrom(3), Z = 4 in compound 2. Compound 1 forms regular molecular chains containing alternative 4,4'-bipyridyl and 4,4'-isopropylidenediphenol units; the molecular components are linked by two types of O-H center dot center dot center dot N hydrogen bonds. Additionally, every two neighboring chains are connected to be a ladder structure by means of weak C-H center dot center dot center dot O interactions. In compound 2, 4,4'-bipyridyl and 4,4'-oxydibenzoic acid first construct one-dimensional architecture by strong O-H center dot center dot center dot N hydrogen bonds, which are similar with the interactions in compound 1. Secondly, two types of weak C-H center dot center dot center dot O contacts formed between 4,4'-bipyridyl and the acid link one-dimensional chains to be interlaced three-dimensional hydrogen-bonded networks.