Clathrate formation in the series of systems diisopentyldibutylammonium halide-water
摘要:
Three clathrate hydrates: (i-C5H11)(2)center dot(C4H9)(2)NCl center dot 38H(2)O (mp 20.5 degrees C), (i-C5H11)(2)center dot(C4H9)(2)NCl center dot 32H(2)O (mp 22.2 degrees C), and (i-C5H11)(2)center dot(C4H9)(2)NCl center dot 27H(2)O (mp 23.8 degrees C) were detected in the system diisopentyldibutyl-ammonium chloride-water. Crystals of all the compounds were isolated, and their composition was determined. The size effect of the halide anions (F-, Cl-, and Br-) on the properties of related compounds was considered.
In the system i-Am2Bu2NBr-H2O, along with the known compound i-Am2Bu2NBr.38H(2)O, three new clathrate hydrates were revealed: i-Am2Bu2NBr.32H(2)O, i-Am2Bu2NBr.26H(2)O, and i-Am2Bu2NBr.24H(2)O. Crystals of all the hydrates were isolated, and their compositions and melting points were determined.