The results of X-ray analysis of 17 complexes of 12-crown-4, 15-crown-5, 18-crown-6, cyclohexano-12-crown-4, cyclohexano-18-crown-6, cis-syn-cis- and cis-anti-cis-dicyclohexano-18crown-6, and isomeric [3.3]-, [2.4]- and [1.5]dibenzo-18-crown-6 with halogenochromates МCrO3X (M=K, NH4, X=F, Cl, Br) and chromates K2CrnO3n+1 (n=2, 3) are discussed. It was revealed that independently of a stoichiometry of these complexes and anions nature, as well as composition, dentaty, structure and configuration of crown ethers (CE), the last ones, as a result of coordination with potassium cation, assume in most cases a “crown-like” conformation, which is more preferable for maxidentate interaction with “guest”. At the same time the structurally “rigid” fragment which determines a form of macrocycle in the complex and, as a consequence, a distance of potassium cation from the mean plane of CE oxygen atoms {δ(K+–[nO]Сrown)}, may be not only 1,2-phenylene but 1,2-cyclohexene. It was found that the parameter Δl (characterizing the potassium cation translation relative to the center of CE cavity), with other conditions being equal, “responds” to a changing of “extraligand” composition as well as configuration of macrocycle enough “tactfully”. However, far from being exception, noted also may be resulting from distinction of character of intermolecular coupling in crystals of given complexes. Comparison of l(К–ОСrown)av and Δl parameters allowed to realize the peculiar classification (screening) of studied complexes, in crystal structure of which the potassium cation orientation is determined very largely by conformational flexibility of an initial polydentate ligand. It was shown that among investigated complexes (including “sandwiches”) the averaged length of Cr–O bond noticeably decreases as a value of l(К–ОCrown)av increases and is cymbate to changing of δ(K+-[nO]Crown) and Δl values.