Platinum(IV) oxide tetrahydrate, PtO 2 ・4H 2 O, can be written as H 2 [Pt(OH) 6 ], so it is called platinic acid (officially hexahydroxoplatinic(IV) acid). It can also be written as Pt(OH) 4 ・2H 2 O, so it is also called platinum(IV) hydroxide, but the exact structure is unknown. It can be obtained by adding an aqueous solution of sodium hydroxide (NaOH) to an aqueous solution of chloroplatinic acid(IV) H 2 [PtCl 6 ], which is produced when platinum is dissolved in aqua regia, and then boiling for a long time and neutralizing with acetic acid. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
酸化白金(IV)4水和物PtO2・4H2OはH2[Pt(OH)6]と書くことができるので白金酸(正式にはヘキサヒドロキソ白金(IV)酸)と呼ばれる。また,これはPt(OH)4・2H2Oと書くこともできるので水酸化白金(IV)とも呼ばれるが,正確な構造は不明である。白金を王水に溶かしたときにできる塩化白金酸(IV)H2[PtCl6]の水溶液に水酸化ナトリウムNaOH水溶液を加え,長時間煮沸した後,酢酸で中和すると得られる。
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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