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Anion coordination and anion-templated assembly: Highlights from 2002 to 2004
No full textThis review article highlights advances made in abiotic anion coordination chemistry from 2002 to 2004. The structure of this review is that similar to the previous reviews in this series that covered 1997-2001 [P.A. Gale, Coord. Chem. Rev. 199 (2000) 181; P.A. Gale, Coord. Chem. Rev. 213 (2001) 79; P.A. Gale, Coord. Chem. Rev. 240 (2003) 191]. The first section examines anion receptors that do not contain metal ions. This is followed by a review of metal containing anion receptors and finally the role of anions in directing the self-assembly of complex molecular architectures are presented in the final section
A simple benzimidazole-based receptor for barbiturate and urea neutral guests that functions in polar solvent mixtures
No full textA 2,6-dicarboxamidopyridine cleft with appended benzimidazole groups functions as a receptor for neutral guests in solvent mixtures of DMSO-d6 and MeNO2-d3
Anion-anion dimerization in tetrabutylammonium hydrogensulfate
No full textThe hydrogensulfate ions of the title compound, C16H36N+. HSO4-, form hydrogen-bonded dimers
Isophthalamides and 2,6-dicarboxamidopyridines with pendant indole groups: a 'twisted' binding mode for selective fluoride recognition
No full textTwo cleft-like anion receptors have been synthesised that
contain indole hydrogen-bond donors and show fluoride
selectively in a DMSO–water solution with crystallographic
studies showing a ‘twisted’ binding mode for fluoride in the
solid state.
Twisted structures have long been of particular interest to the
supramolecular chemistry community. From early work on metal
templated helices1 through more recent work on foldamers2 and
organic helical structures,3 these species are not only elegantly
designed but can also play roles in molecular recognition and
sensing
Bis(tetrabutylammonium) isophthalate 1-phenyl-3- [2,4,5-tris(3-phenylureido)phenyl] urea: a synchrotron study
No full textThe structure of 2C16H36N+·C8H4O42-·C34H30N8O4, comprises tapes of encapsulated hydrogen-bonded isophthalate anions which are arranged into parallel sheets interleaved with tetrabutylammonium layers; each of the two independent neutral molecules is disposed about a centre of inversion
meso-Octacyclopropylcalix[4]pyrrole ethanol solvate
No full textThe title compound, C44H52N4·C2H5OH, is a calix[4]pyrrole-type macrocycle acting as a receptor, by means of hydrogen-bond interactions to an ethanol solvent. The pyrrole groups are arranged in a 1,3-alternate conformation which gives rise to disorder in the ethanol guest, due to its ability to coordinate both above and below the plane of the macrocycle
4-Aminomethyl-phenylamino-bis-(3,4-dichloro-5-phenylcarbamoyl-1H-pyrrole -2-carboxamide) tetrabutylammonium salt
Full text linkThe crystal structure of the tetrabutylammonium salt of doubly deprotonated 4-aminomethyl(phenylamino)bis-(3,4-dichloro-5-phenylcarbamoyl-1H-pyrrole -2-carboxamide), 2C(16)H(36)N(+)• C32H22C14N6O42-, has been elucidated. The anion lies on an inversion centre and adopts a twisted S shape
N,N '-Bis(3-nitrophenyl)isophthalamide tetrabutylammonium chloride
No full textThe receptor of the title compound, C14H36N+·Cl-·C20H14N4O6, binds a chloride anion via two N-HCl hydrogen bonds [NCl = 3.2367 (14) Å and 3.3239 (15)°]
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