triiodide

例句：

1. 1. This compound is used as a catalyst in the synthesis of organic compounds.
   这种化合物在有机化合物的合成中用作催化剂。
2. 2. The molecule has an important role in the process of photosynthesis.
   这种分子在光合作用过程中起着重要的作用。
3. 3. The triiodide was found to be toxic when exposed to air.
   当暴露于空气中时，这种三碘化物被发现是有毒的。