Chemical formula: NaAlH 4 . Like the corresponding lithium salt, it probably has the structure tetraaluminum hydride. It is prepared by reacting sodium hydride (NaH) with aluminum in a stream of hydrogen. It has almost the same reducing power as lithium aluminum hydride, but is expensive and therefore rarely used. It reduces esters to aldehydes. It is soluble in tetrahydrofuran and glyme (1,2-dimethoxyethane). When heated to 220 °C in nitrogen, it decomposes to produce Na 3 AlH 6 . Source: Heibonsha World Encyclopedia, 2nd Edition Information |
化学式NaAlH4。おそらく対応するリチウム塩と同じく,テトラヒドリドアルミン酸塩の構造をもつものと思われる。水素化ナトリウムNaHとアルミニウムを水素気流中で反応させて合成する。水素化アルミニウムリチウムとほぼ同じ還元力を有するが,高価であるため使用されることは少ない。エステルを還元してアルデヒドをつくる。 テトラヒドロフランやグライム(1,2‐ジメトキシエタン)に溶ける。窒素中220℃に加熱すると分解してNa3AlH6を生ずる。
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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