A 1:1 Host-Guest Complex between 1,4,7,10,13,16-Hexaoxacyclooctadecane ('18-crown-6') and m-Nitroaniline: Mere Stoicheiometry or a Genuine 1:1 Adduct ?
نویسنده
چکیده
The stoicheiometrically 1:1 adduct of 1,4,7,10,13,16-hexaoxa-cyclooctadecane with m-nitroaniline, C18H30N2O8, Mr = 402.45, crystallises from toluene in red-orange prisms, (probable) space group P i , a = 801.8(3), b = 920.4(3), c = 1403.3(4) pm, a = 80.40(4), ß = 79.79(4), y = 85.95(3)°, V = 1.07910 nm3, Z = 2, dcaic. = 1.238 Mgm~3. Structure refinement converged at R = 0.060 (Rw = 0.002) for 2915 diffractometer data.
منابع مشابه
Stabilization of a Host-Guest Type Complex by Bifurcated Hydrogen Bonds
The X-ray structure of the 1:2 host-guest complex between 1,4,7,10,13,16-hexaoxacyclooctadecane (18-crown-6) and 2,4-dinitrophenylhydrazine is reported. Crystallography data are: space group P2i/c, a = 8.557(2), b = 16.745(6), c = 12.387(4) Ä, ß = 117.08(13)°, Z = 2, D m = 1.37 g • cm"3, D c = 1.387 g • cm-3 , m.p. 414 K (decomp.). The present B is 0.11 for 1733 diffractometer data. In the comp...
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Complexation characteristics of 1,4,7,10,13,16-hexaoxacyclooctadecane (18-crown-6, 18C6) with Li+ and K+ in a hydrophobic ionic liquid of 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide under dry and humid conditions at 298.2 K were studied by 1H and 13C NMR chemical shifts. The comparison of the 1H and 13C chemical shifts of 18C6 molecule between the dry and humid IL solutions w...
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تاریخ انتشار 2012