The effect of temperature on structure ow-temperature form Transition High-temperature form tempera Structure Co ture Structure Co Substance type ordination C) type ordination Cscl Caesium chloride.. 8: 8 445 Sodium chloride. 6: 6 RbCl Caesium chloride 8: 8 colum oride 6:6 TzT H exagonal clos 12 Cubic body pa ace centred Caco. Aragonite ascite 866 KNO, Aragonite I2 ascite This is the number of oxygen atoms co-ordinating the cation