Abstract
The 1:2 charge separated KNO3 complex with benzo-15-crown-5 (B15C5) has been crystallized from a 50% water-methanol solution. K(B15C5)2NO3·H2O is monoclinic,P21/c,a=12.717(2),b=19.569(2),c=13.025(3) A, β=100.79(1)o,Z=4,D c =1.37 g·cm−3. The X-ray structure was refined toR=0.052 for 3049 independent reflections withF 0 2 ≥2.0σ(F 0 2 ), collected with MoK α radiation for a 2 θ-range of 4–44°. The K+ ion is coordinated tenfold in a crown sandwich through all five oxygen atoms of the macrocyclic ligand. Nitrate and water oxygens are not involved in the cation coordination sphere.
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