Platinum chloride is also called chloroplatinic acid or platinum hydrochloric acid. Platinum acids and their salts containing platinum in the oxidation states +II and +IV are known. [Tetrachloroplatinic acid (II)] The chemical formula is H 2 [PtCl 4 ]. When an aqueous solution of H 2 [PtCl 6 ] is reduced, a red solution is obtained. When a metal hydroxide is dissolved in this solution, the salt M I 2 [PtCl 4 ] (M I is a monovalent cation) is obtained. The salt is a red crystal. Alkaline salts are easily soluble in water. [PtCl 4 ] 2- has a square planar structure. Examples include potassium salt K 2 [PtCl 4 ] (specific gravity 3.382 (25°C)), cesium salt Cs 2 [PtCl 4 ], and barium salt Ba[PtCl 4 ]・3H 2 O (specific gravity 2.868). Source: Heibonsha World Encyclopedia, 2nd Edition Information |
塩化白金酸,白金塩化水素酸ともいう。酸化数+IIおよび+IVの白金を含む酸とその塩が知られている。 [テトラクロロ白金(II)酸] 化学式H2[PtCl4]。H2[PtCl6]水溶液を還元すると赤色溶液として得られる。この溶液に金属の水酸化物を溶かすと塩MI2[PtCl4](MIは1価陽イオン)が得られる。塩は赤色結晶。アルカリ塩などは水に易溶。[PtCl4]2-は平面正方形型構造をもつ。カリウム塩K2[PtCl4](比重3.382(25℃)),セシウム塩Cs2[PtCl4],バリウム塩Ba[PtCl4]・3H2O(比重2.868)などがある。 出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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