Intercalation of 1,2-Alkanediols into α-Zirconium Hydrogenphosphate
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Intercalation compounds of α-Zr(HPO4)2 · H2O with 1,2-alkanediols (from C3 to C16) have been prepared by replacing 1-propanol in α-Zr(HPO4)2 · 2C3H7OH with the desired 1,2-alkanediols by a treatment in a microwave field. It was found that the intercalates contain 1.5 molecules of diol per formula unit. The diol molecules are placed between the host layers in a bimolecular way with their aliphatic chains tilted at an angle of 51°. The diol molecules are anchored in the interlayer space by H-bonds. A mixed intercalate, containing 1,2-butanediol and 1,2-decanediol in a roughly equimolar ratio, is formed when the α-Zr(HPO4)2 · 2C3H7OH intercalate, suspended in a mixture of 1,2-butanediol and 1,2-decanediol, is exposed to microwave radiation. No new phase containing both types of the guest molecules was observed when the 1-propanol intercalate, suspended in a mixture of 1-propanol and 1,2-octanediol, is exposed to microwave radiation.
Keywords1,2-alkanediol intercalation α-zirconium hydrogen phosphate
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This study was supported by the Academy of Sciences of the Czech Republic (AVOZ40500505) and the Ministry of Education, Youth and Sports of the Czech Republic (MSM 0021627501) and by the Grant Agency of the Czech republic (GA 203/05/2306).
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