Synthesis and Structure of Hexa(Diethoxyphosphoryloxy)calix[6]arene |
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| Authors: | Leonid N. Markovsky Vitaly I. Kalchenko Myroslav A. Vysotskya Vladimir V. Pirozhenko Yurij A. Simonov Alexander A. Dvorkin |
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| Affiliation: | 1. Institute of Organic Chemistry of the National Ukrainian Academy of Sciences , Murmanskaya str., 5, Kiev-94, 253660, Ukraine;2. Institute of Physical Chemistry of the Polish Academy of Sciences , 01224, Warsaw, Poland;3. Institute of Applied Physics of the Moldova Academy of Sciences , Kishinev, 277028, Moldova |
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| Abstract: | Abstract Hexapodand 1, which contains six phosphoryl groups at the lower rim of the macrocycle, was synthesized by the reaction of calix[6]arene with diethylchlorophosphate and sodium hydride. The structure is confirmed by X-ray studies: C66H90O24P6, Pbca, a = 14.867 (4), b = 18.577 (4), c = 26.510(6), Dc = 1.265g/cm3, Z = 4, and R = 0.063 for the 4600 observed reflections. The molecule 1 exists in a centrosymmetrical flattened 1,2,3-alternate conformation, in which diametrically opposed benzene rings are parallel. Four phosphoryl groups are oriented away from the cycle, two other groups are self-included in the macrocycle cavity. |
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