ISSN:
1573-1111
Keywords:
X-ray crystal structure
;
crown ether-potassium complex
;
trichlorocuprates
;
clathrates
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The structure of the trichlorocuprate of naphtho-15-crown-5 complexed potassium has been determined by X-ray analysis. The crystal contains the complex cations [K(naphtho-15-crown-5)2]+, the anion [Cu2Cl6]2− and water molecules. The full composition of the compound in the solid state is represented by the formula [K(naphtho-15-crown-5)2]2[Cu2Cl6]·nH2O), wheren≌3. The sandwich type cations are similar to those found previously for potassium complexes with benzo-15-crown-5. The coordination number of potassium is equal to 10; the coordination polyhedron is a 15-crown-5. The coordination number of potassium is equal to 10; the coordination polyhedron is a pentagonal antiprism. The water molecules are disordered and occupy six symmetrically independent positions with a probability of ∼0.5 in the crystal. The lack of close contacts between water molecules and the remaining components enabled the treatment of the complex as a clathrate.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00708754
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