pentahalide

例句：

1. 1. The compound is a key component in the synthesis of many organic compounds.
   这种化合物是合成许多有机化合物的关键成分。
2. 2.The pentahalide reacts with water to form a salt and a gas.
   五卤化物与水反应生成盐和气体。
3. 3. The pentahalide has been found to be highly toxic when inhaled.
   五卤化物吸入时被认为具有高度毒性。