Two triethylammonium ion complexes of monoanionic calix[4]arene

Acta Crystallographica. Section C, Crystal Structure Communications
P ThuéryJ Vicens

Abstract

Two complexes between mono-deprotonated calix[4]arene and Et(3)HN+ are reported. The first, triethylammonium 26,27,28-trihydroxypentacyclo[19.3.1.1(3,7).1(9,13).1(15,19)]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaen-25-olate, C(6)H(16)N+ x C(28)H(23)O(4)-, comprises only the cationic and anionic species, whereas the second, tris(triethylammonium) tris[26,27,28-trihydroxypentacyclo[19.3.1.1(3,7).1(9,13).1(15,19)]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaen-25-olate] acetonitrile solvate, 3C(6)H(16)N+ x 3C(28)H(23)O(4)(-) x C(2)H(3)N, comprises one acetonitrile solvent molecule for three such units. In both cases, the units are stacked in columns so that the ammonium cation is hydrogen bonded to a phenolic or phenolate O atom of one molecule and included in the hydrophobic cavity of another neighbouring calixarene. The short contacts present indicate that cation* * *pi and C-H* * *pi interactions are likely to be involved in the inclusion phenomena.

Citations

Nov 14, 2012·Chemical Reviews·A Subha Mahadevi, G Narahari Sastry
Jan 17, 2017·Organic & Biomolecular Chemistry·Thomas HanauerTobias Gruber
Sep 30, 2009·Chemical Communications : Chem Comm·Oksana Danylyuk, Kinga Suwinska
May 27, 2010·Beilstein Journal of Organic Chemistry·Andreas Späth, Burkhard König

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