不饱和度又称缺氢指数,是有机物分子不饱和程度的量化指标,即有机物分子中与碳原子数相等的开链烷烃相比较,每减少2个氢原子,则有机物的不饱和度增加1,用希腊字母Ω表示。在求较为复杂的分子式、分子结构、同系物、同分异构体的判断等方面,运用不饱和度来解决往往能 Unsaturation, also known as the lack of hydrogen index, is a quantitative indicator of the degree of unsaturation of organic molecules, organic molecules with the same number of open-chain alkanes compared to each reduction of 2 hydrogen atoms, the organic unsaturation increases by 1 , With the Greek letter Ω said. In the more complex formula, molecular structure, homologues, isomers and other judgments, the use of unsaturation to solve can often