Open AccessA new polymorph and two inclusion compounds of 9,9′‐spirobifluorene
Author(s) -
Douthwaite Richard E.,
Taylor Andrew,
Whitwood Adrian C.
Publication year - 2005
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s0108270105009479
Subject(s) - biphenyl , benzene , hydrogen bond , chemistry , molecule , crystallography , stereochemistry , organic chemistry
Two new inclusion compounds of 9,9′‐spirobifluorene (SBF) incorporating benzene [(I), C 25 H 16 ·C 6 H 6 ] and biphenyl [(II), C 25 H 16 ·C 12 H 10 ], and a new polymorph of SBF [(III), C 25 H 16 ] are reported. All three exhibit C—H⋯π(arene) hydrogen bonds between adjacent SBF molecules. Compound (II) also contains biphenyl C—H to SBF π‐arene interactions. Collectively, hydrogen bonding gives rise to a chain and a layered motif in compounds (I) and (II), respectively.