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Crystal and molecular structure of newly synthesized 2,3,2′,3′‐Bis{8″,11″‐dioxa[4.3.3]propella(3″,4″)}biphenyl
Author(s) -
Grochowski Jacek,
Jamrozik Janusz,
Serda Paweł,
Zesławski Wojciech
Publication year - 1995
Publication title -
liebigs annalen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 0947-3440
DOI - 10.1002/jlac.1995199506152
Subject(s) - propellane , chemistry , biphenyl , molecule , crystallography , crystal structure , crystal (programming language) , perpendicular , stereochemistry , bicyclic molecule , geometry , organic chemistry , mathematics , computer science , programming language
The title compound 5 was obtained from 2,2′,3,3′‐tetramethylbiphenyl in a multi‐step reaction sequence leading to the bis(propellane). X‐ray structure analysis proved the identity of bis(propellane). In the solid state the molecule possesses roughly a twofold symmetry axis perpendicular to the biphenyl bond. The conformation of the molecule is determined by a 53.5(1)° torsional angle between the biphenyl planes. The propellane bond is parallel to the phenyl plane in both symmetric parts of the molecule, what implies a boat conformation of the fused six‐membered rings.