Chuprin G. Synthesis, structure and properties of complexes of crown ethers with halogeno-, halogenodiperoxo-, di- and trichromates sodium, potassium and ammonium

3. The approaches to the synthesis of crystal complexes (more than 40 compounds) of aliphatic, cycloaliphatic, benzo- and dibenzocrown ethers (CE) with halogeno-, halogenodiperoxo-, di- and trichromates of sodium, potassium and ammonium (more than 40 compounds) have been elaborated. On the base of the X-ray structure analysis of 18 complexes the peculiarities of the crystal and molecular structure as well as interrelationships between structure parameters in molecules of studied complexes were established. It was found that the changing of Cr-O bonds lengths and, in result, a reactivity of these complexes in benzyl alcohol (BA) oxidation, occurs under the influence of several complementary factors - such as a cation translation relative to a mean plane and CE cavity center, the length of К-ОCr bond and Cr=О···К+·CE and Cr-Hal···К+·CE intermolecular interactions.