title: Triphenylsilanol-4,4'-bipyridyl (4/1): the Z' = 4 polymorph revisited.
abstract: A fully ordered structure is reported for the polymorph of triphenylsilanol-4,4'-bipyridyl (4/1), 4C18H16OSi·C10H8N2, having Z' = 4. The asymmetric unit contains four similar but distinct five-molecule aggregates, in which the central bipyridyl unit is linked to two molecules of triphenylsilanol via O-H···N hydrogen bonds, with a further pair of triphenylsilanol molecules linked to the first pair via O-H···O hydrogen bonds. An extensive series of C-H···π(arene) hydrogen bonds links these aggregates into complex sheets. This structure is compared with a previously reported structure [Bowes, Ferguson, Lough & Glidewell (2003). Acta Cryst. B59, 277-286], which was based on an erroneous disordered structural model arising from a false direct-methods solution with reference to a strong pseudo-inversion centre.
authors.affiliation: Istituto di Cristallografia, CNR, Via G. Amendola 122/O, Bari I-70126, Italy.
authors.forename: Giovanni L
authors.initials: GL
authors.lastname: Cascarano
authors.forename: George
authors.initials: G
authors.lastname: Ferguson
authors.forename: Carmelo
authors.initials: C
authors.lastname: Giacovazzo
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell
authors.forename: Anthony L
authors.initials: AL
authors.lastname: Spek
mesh_terms: D003460:Crystallization; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008958:Models, Molecular; D015394:Molecular Structure; D011725:Pyridines / Q000737:chemistry*; D012821:Silanes / Q000737:chemistry*
chemical_list: D011725:Pyridines; D012821:Silanes; C034306:4,4'-bipyridyl