Synthesis and Crystal Structure of [Na2(μ-H2O)(H2O)CB[5]]Cl2 · 6H2O, [Na3(μ-H2O)4(H2O)4(CNPy@CB[6])]Cl3 · 8H2O,and [Rb2(μ-H2O)2(CNPy@CB[6])]Cl · 8H2O

摘要

The chain coordination polymers [Na2(μ-H2O)(H2O)CB[5]]Cl2 · 6H2O (I), [Na3(μ-H2O)4(H2O)4(CNPy@CB[6])]Cl3 · 8H2O (II), and [Rb2(μ-H2O)2(CNPy@CB[6])]Cl2 · 8H2O (III) were prepared by heating (110℃) of a mixture of sodium or rubidium chloride, cucurbit[n]uril (CB[n], where n = 5, 6), 4-cyanopyridine, and water. According to X-ray diffraction data, binding of polynuclear cations with CB[n] in I-III occurs through coordination of the oxygen atoms of the cucurbit[n]uril portals to alkali metal atoms. Complexes I-III of the above composition isolated to the solid phase as supramolecular compounds with CB[n] were structurally characterized for the first time.