Sterically Controlled Architectural Reversion in Hydrogen-Bonded Crystalline Clathrates

Autor:	Lisa Sukarto, Cara C. Evans, Michael D. Ward
Rok vydání:	1998
Předmět:	Steric effects Hydrogen Bilayer Pillar chemistry.chemical_element General Chemistry Biochemistry Increased height Catalysis Nitrobenzene chemistry.chemical_compound Crystallography Colloid and Surface Chemistry chemistry Molecule Porosity
Zdroj:	Journal of the American Chemical Society. 121:320-325
ISSN:	1520-5126 0002-7863
DOI:	10.1021/ja983122o
Popis:	Guanidinium cations and azobenzene-4,4‘-disulfonate (ABDS) dianions form a host lattice with a bilayer architecture in the presence of 1,4-dibromobenzene (DBB), 1,4-divinylbenzene (DVB), 1-nitronaphthalene (NN), and nitrobenzene (NB) guest molecules. The guests occupy one-dimensional pores in bilayer galleries created by ABDS dianions, which behave as “pillars” that connect opposing hydrogen-bonded guanidinium-sulfonate (GS) sheets. This contrasts with our previous observation of a high porosity “brick” framework that crystallized with these guests when the pillar was biphenyl-4,4‘-disulfonate (BPDS). The reversion to the bilayer framework upon changing to ABDS can be attributed to the increased length of this pillar. Whereas the four guests are too large to fit in the pores of an ideal bilayer framework constructed from BPDS, they can be accommodated in bilayer galleries of increased height provided by the longer ABDS pillars. The control of framework architecture in this manner demonstrates that the sol...
Databáze:	OpenAIRE
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