title: Synthon polymorphism and pseudopolymorphism in co-crystals. The 4,4'-bipyridine-4-hydroxybenzoic acid structural landscape.
abstract: Co-crystals of 4,4'-bipyridine and 4-hydroxybenzoic acid (1 : 2) show synthon polymorphism with the former being more stable. A 2 : 1 co-crystal is pseudopolymorphic within the same structural landscape with the structural roles of the two bipyridine N-atoms being distinct, as evidenced by mimicry by 4-phenylpyridine.
authors.affiliation: Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, India.
authors.forename: Arijit
authors.initials: A
authors.lastname: Mukherjee
authors.forename: Gautam R
authors.initials: GR
authors.lastname: Desiraju