ISSN:
0894-3230
Keywords:
inclusion compounds
;
hydroxy hosts
;
acetone
;
toluene
;
supramolecular crystalline complexes
;
Chemistry
;
Theoretical, Physical and Computational Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
---The structures of two solid inclusion compounds formed between roof-shaped diarylmethanol-substituted 9,10-dihydro-9,10-ethanoanthracene hosts, 1 and 2, and acetone or toluene, 1 · acetone (2:1) and 2 · toluene (1:1), were investigated by single-crystal x-ray analysis. Both compounds crystallize in the monoclinic system, although in different space groups [C2/c for 1 · acetone (2:1) and P21/n for 2 · toluene (1:1)]. The crystal data are as follows: 1 · acetone (2:1), a=19·314(1), b=8·451(1), c=28·533(1), β=103.38(1)°; 2 · toluene (1:1), a=9·715(5), b=29·51(2), c=9·858(6), β=104·98(4)°. Conclusions are drawn concerning the rigidity of the molecules, the nature and degree of internal molecular motions and the type of disorder present in the crystals. Both hosts 1 and 2 reveal weak intramolecular interactions between the OH group and the π-face of the adjacent benzo ring of the ethanoanthracene moiety. The packing arrangement of 1 · acetone (2:1) is governed by weak C-H · · · O host-guest interactions, whereas the somewhat controversial C-H · · · F interactions seem to stabilize the host framework in the fluoro-containing 2 · toluene (1:1) compound. © 1997 by John Wiley & Sons, Ltd.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
