Water of crystallization degree of hydration can be critical to the resulting chemical properties. For example, anhydrous RhCl is not soluble in water and is relatively useless in organometallic chemistry whereas RhCl•3HO is versatile. Similarly, hydrated AlCl is a poor Lewis acid and thus inactive as a catalyst for Friedel-Crafts reactions. Samples of AlCl must therefore be protected from atmospheric moisture to preclude the formation of hydrates. Crystals of hydrated copper(II) sulfate consist of [Cu(HO)] centers linked to SO ions. Copper is surrounded by six oxygen atoms, provided by two different sulfate groups and four molecules of water. A fifth water resides elsewhere
Lady in the Water ten films of 2006, above films such as Terrence Malick's "The New World". The film was released simultaneously on DVD, HD DVD, and Blu-ray by Warner Home Video on December 19, 2006. Lady in The Water is the only M. Night Shyamalan film that was ever released on HD DVD. Shyamalan, who credits the development of the movie to a bedtime story he told his children about what happens in their pool at night, wrote the 72-page children's book "Lady in the Water: A Bedtime Story" (Little, Brown, New York, ) to coincide with the movie. The book's illustrations were