Аннотация:
The phase diagram of the tetramethylammonium fluoride−tetrapropylammonium fluoride−water system has been studied in the crystallization field; hydrate Me4NF·0.5Pr4NF·15H2O (m.p. 21.7 °C) with hexagonal II unit cell: a = 12.290 Å, c = 59.354 Å has been discovered and so, as predicted by Jeffrey, the hexagonal structure II framework has been confirmed experimentally.