ISSN:
1573-1111
Keywords:
crown ether
;
liquid clathrate
;
aluminum alkyl
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Potassium chloride does not react with trimethylaluminium in benzene in the absence of a crown ether. With the addition of dibenzo-18-crown-6, a normal liquid clathrate ensues. The composition of the parent compound has been established by a single crystal X-ray diffraction study. The space group is monoclinicP21/c with unit cell dimensionsa=21.319(8),b=9.512(4),c=21.081(8) Å, β=93.79(3)°, andρ calc1.15 g cm−3 forZ=4. Refinement led to a final conventionalR value of 0.049 for 2224 observed reflections. The anion has the expected angular geometry (Al−Cl−Al=120.0(1)°). There are two different types of benzene in the crystalline solid. One is associated with the K+ ion, while the other exists in layers normal to thea axis.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00656823
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