Ī related series with ratio 1.5 of the monovalent ion to cerium includes 2Ce(NO 3) 3.3(NH 4)NO 3.12H 2O Ī mixed caesium, sodium cerium triple nitrate Cs 2NaCe(NO 3) 6 crystallizes in the cubic system. These bridges form three spirals each at 90° to each other along the crystal axes. Three of the nitrates form a bridge in each of three dimensions. In this compound each cerium atoms is surrounded by twelve oxygen atoms from six nitrate groups. Three formulas exist in each unit cell which at 20 ☌, has a volume of 2514.1 Å 3 and cell side of a=13.597 Å. The crystals are colourless cubic from space group P4 132. The potassium salt, Ce 2K 3(NO 3) 9 can be made by using the water solution of potassium nitrate and cerous nitrate in 3:2 molar ratio, evaporated at 40 ☌. There are anhydrous double nitrates such as Ce 2Rb 3(NO 3) 9 and Ce 2K 3(NO 3) 9. The way the components are arranged in the crystal is that there are six nitrates around each cerium atom, however to get to the average of five per cerium, two nitrate groups on each, link the atoms into a chain along the an axis. The crystals are clear rod shaped monoclinic with space group P2/c. It can be made by boiling the stoichiometric mixture of cerous nitrate, and sodium nitrate in nitric acid, and then evaporating at 40 ☌. Other cerous double nitrates Ĭerous sodium nitrate monohydrate, Na 2Ce(NO 3) 5.H 2O has density 2.641 g/cm 3. Low thermal resistance is important at temperatures below 1 K, because there is not much temperature difference to cause a large heat flow rate, and cooling can take an excessive time if there are barriers to heat transfer. At the time of discovery it value was only 1% of the previous record holder. This has an extremely low Kapitza resistance to liquid 3He. The common crystal face Miller index is diaquapentanitratocerateġ,10-Phenanthroline-H diaquapentanitratocerateĬerous magnesium nitrate is the first discovered member of a divalent series CeM(II)(NO 3) 5. It forms orthorhombic crystals with bipyramidal shape. Cerium(IV) nitrates Ĭerium tetranitrate pentahydrate is prepared by evaporating a solution of ceric nitrate in concentrated nitric acid. The salts have extreme non-linear optical properties. The diaquapentanitratocerate(III) anion (Ce(NO 3) 5(H 2O) 2) 2− occurs in several salts. Hydronium cerium(III) nitrate hydrate, Ce(NO 3) 5(H 3O) 2.H 2O It is monoclinic with space group P2/ c. Cerous nitrate hexahydrate has pinacoidal triclinic crystals. At 150 ☌ the hexahydrate loses water of crystallization to make a trihydrate, which itself decomposes above 200 ☌. For very serious burns it reduces the death rate. Concentrations used are 0.5 M for the cerium nitrate. It is a component in a burn treatment cream that also includes silver sulphadiazine. Double nitrates of cerium also exist.Ĭerium(III) nitrates Cerium(III) nitrate crystal with Miller index notationĪnhydrous cerous nitrate, also called cerium(III) nitrate, is the anhydrous salt with the formula Ce(NO 3) 3.(CAS number 1).Ĭerium nitrate hexahydrate, with the formula Ce(NO 3) 3.6H 2O (CAS number 1) is the most common nitrate of cerium(III). Often these compounds contain water, hydroxide, or hydronium ions in addition to cerium and nitrate. Cerium nitrate refers to a family of nitrates of cerium in the +3 or +4 oxidation state.
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