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
A Fish in the Water he played in the junior team of Universitario de Deportes, the Peruvian football club he is a supporter of. A controversial section of the book contains harsh criticism of fellow Peruvian intellectuals who at some point had a difference of opinion, mostly political in nature, with Mr. Vargas, for instance the aggression against then dying writer Julio Ramón Ribeyro. In an interview with Clifford Landers (Albuquerque, 5 November 1994), translator Helen Lane mentions that she originally translated the title as ""A Fish in Water", without the article, and it was changed to "A Fish in the Water", thereby losing the