欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
多重键是化学键的一个基本概念.元素周期表中的主族元素最多能形成三重键,主族元素轻原子如C、N和O等能形成稳定的二重键和三重键,而主族元素重原子由于Pauli排斥作用很难形成多重键.后来合成了含有p区重元素同原子或杂原子双键化合物.p区重主族元素形成三重键更加困难,因为其活性太高.最近合成、分离和表征了一个稳定的含有Si≡Si三重键的二硅炔化合物.对过渡金属-过渡金属的相互作用实验和理论研究发现了四重键、五重键甚至是六重键,主要是因为d轨道和f轨道参加了成键.锕系元素同原子间最高能形成六重键.
英文摘要：
Multiple bond is a fundamental concept of chemical bond. The maximum number of chemical bond between main group elements in the periodic table is three. Stable double and triple bond between light main elements such as carbon, nitrogen and oxygen can be formed, while multiple bonds between heavy main elements is unstable due to Pauli repulsion. Afterward, scientists synthesized homoleptic and heteroleptic double bond compounds involving heavier p block elements. However, it is difficult to form triple bond between heavier p block elements because of their high reactivity. Recently, stable disilyne with silicon-silicon triple bond was syn- thesized, isolated and characterized. Quadruple, quintuple and sextuple bond were found by experimental and theoretical study on interactions between transition metals, because of d and f orbital involved in bond. Sextuple bond can be formed between two same actinide atoms.
同期刊论文项目
同项目期刊论文
期刊信息
位置：