Insight into the mechanism of the protonation of cryptand 222 within a liquid clathrate medium: synthesis and X-ray crystal structure of [H3O][222–2H][(CoCl3)2(µ-Cl)]
摘要:
The reaction of CoCl2 . 6H(2)O with cryptand 222 in the presence of HCl(g) in toluene yields a two-phase liquid clathrate solution from which the complex [H3O][222-2H]-[(CoCl3)(2)(mu-Cl)] is isolated; the crystal structure exhibits an oxonium ion which is situated to one side of the [222-2H](2+) dication and interacts with two of its ethereal chains via O+-H...O hydrogen bonds which lends a measure of support for the proposed mechanism of protonation of this flexible macrobicycle.