The possibility of isolating platinum(IV) nitrate complexes to the solid phase from a nitric acid solution of platinum in the form of adducts with dibenzo-18-crown-6, 15-crown-5, and 12-crown-4 ether is studied. It is found that when nitric acid solutions containing 15-crown-5 ether (15-C-5) are evaporated, a polycrystalline product consisting of mainly a mixture of phases with the compositions (H3O⊂15-C-5)2[Pt(NO3)6] (1), (H3O⊂15-C-5)2(15-C-5)[Pt(NO3)6]·2H2O (2), and (15-C-5)[Pt4(μ3-OH)2(μ2-OH)4(NO3)10]·3H2O (3) is formed. The structure of the mentioned compounds is established by single crystal X-ray diffraction. In the case of dibenzo-18-crown-6 ether, the interaction with a nitric acid solution of platinum results in the formation of a poorly soluble tetranitro derivative of macrocyclic ether. Evaporation of nitric acid solutions of platinum containing 12-crown-4 ether does not allow the preparation of a solid crystalline phase.

中文翻译：

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硝酸铂 (IV) 与 15-CROWN-5 醚配合物的加合物

研究了从铂的硝酸溶液中以与二苯并 18-冠-6、15-冠-5 和 12-冠-4 醚的加合物形式将硝酸铂 (IV) 络合物分离为固相的可能性. 发现当含有 15-crown-5 醚 (15-C-5) 的硝酸溶液蒸发时, 多晶产物主要由具有 (H3O⊂15-C-5)2[Pt (NO3)6] (1), (H3O⊂15-C-5)2(15-C-5)[Pt(NO3)6]·2H2O (2), (15-C-5)[Pt4(形成μ3-OH)2(μ2-OH)4(NO3)10]·3H2O(3)。上述化合物的结构是通过单晶 X 射线衍射确定的。在二苯并-18-冠-6 醚的情况下，与铂的硝酸溶液相互作用导致形成难溶的大环醚四硝基衍生物。