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
Ashford-in-the-Water neo-Tudor style in 1897. In the 2011 census, Ashford-in-the-Water was 99.5% White, and 0.2% Asian. Ashford-in-the-Water Ashford-in-the-Water is a village in the Derbyshire Peak District, England, and on the River Wye. It is known for the quarrying of Ashford Black Marble (a form of limestone), and for the maidens' garlands made to mark the deaths of virgins in the village until 1801. Some of these are preserved in the parish church. The civil parish population (including Sheldon) taken at the 2011 Census was 559. The name Ashford derives from the Old English "æsc" and "ford", and means a ford where