期刊
ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE
卷 63, 期 -, 页码 M2144-U1081出版社
BLACKWELL PUBLISHING
DOI: 10.1107/S1600536807033533
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The metathesis reaction of Ag[(RO)(3)Al-F-Al(OR)(3)] and n-BU4NBr in CH2CI2 yields nearly quantitatively n-BU4N+center dot-[(RO)(3)Al-F-Al(OR)(3)](-) [with R = C(CF3)(3))] or (C16H36N)-[Al-2(C4F9O)(6)F]. In the asymmetric unit, two entire cations and four half-anions (one is disordered over two positions) are found. The intramolecular distances are comparable to those found in other n-BU4N+ or [(RO)(3)Al-F-Al(OR)(3)](-`) salts. Only weak interactions outside the sum of the van der Waals radii [r(F + H) = 2.6 angstrom] are found between the cations and anions. The title compound is considerably soluble in CH2CI2, which makes this salt a possible candidate as supporting electrolyte for electrochemical applications in nonpolar solvents. In addition, the [(RO)(3)Al-F-Al(OR)(3)](-) anion is very stable against oxidation. Two CF3 groups of one anion are disordered over two positions; the site occupancy ratios are 0.64:0.36 and 0.78:0.22.
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