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Supramolecular Silanol Chemistry: Inclusion Complexes of 1,3,5‐Tris(diisopropylhydroxysilyl)benzene and 4,4′‐Bis(pyridines)
Author(s) -
Beckmann Jens,
Jänicke Sanna L.
Publication year - 2006
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200600383
Subject(s) - chemistry , supramolecular chemistry , molecule , crystallography , pyridine , silanol , hydrogen bond , acceptor , benzene , bipyridine , stereochemistry , crystal structure , medicinal chemistry , catalysis , organic chemistry , condensed matter physics , physics
The trisilanol 1,3,5‐(HO i Pr 2 Si) 3 C 6 H 3 ( 5 ), a novel building block for applications in supramolecular chemistry, has been prepared via the intermediates 1,3,5‐(H i Pr 2 Si) 3 C 6 H 3 ( 6 ) and (Cl i Pr 2 Si) 3 C 6 H 3 ( 7 ). The inclusion complexes 5· 0.5H 2 O, 5· bpy · 0.5H 2 O, 5· bpe, 5· azpy and 5· bpa have been investigated by X‐ray crystallography [bpy = 4,4′‐bipyridine, bpe = ( E )‐bis(4‐pyridyl)ethylene, azpy = 4,4′‐azopyridine, bpa = bis(4‐pyridyl)aceylene]. The ratio between donor and acceptor molecules is always 1:1 and the crude supramolecular motifs are very similar for 5· bpy · 0.5H 2 O, 5· bpe, 5· azpy and 5· bpa. The trisilanol molecules form 1D chains, which are connected by nearly perpendicular 4,4′‐bis(pyridine) molecules to give rise to formation of 2D grid networks featuring O–H ··· O(H)Si and O–H ··· N hydrogen bonds. Differences are observed in the shape and size of the voids defined by the 2D grids. The smaller voids are blocked by trisilanol molecules of adjacent 2D networks in case of 5· bpy · 0.5H 2 O and 5· bpe. In case of 5· azpy, the larger voids are filled by interpenetration of the same 2D networks. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)