There's not actually chemical covalent bonds that are formed but it's a non-covalent interaction, usually dominated by hydrogen bonding.

所以配体和受体之间不生成共价键,这是一种非共价化合反应,它们通常以氢键相联

耶鲁公开课 - 生物医学工程探索课程节选

But the beauty in this calculation is it shows that this concept of electron sharing in an unequal manner is sound and it gets you into the right ballpark.

但在这个计算过程中,真正漂亮的是对电子,非平均共价的考虑很完全,从而指引我们向一个正确的方向思考。

麻省理工公开课 - 固态化学导论课程节选

Now, usually this is a non-covalent interaction.

这通常是一种非共价化合反应

耶鲁公开课 - 生物医学工程探索课程节选

We're going to talk about this kind of non-covalent interaction more when we talk about the immune system, because one example of ligand and receptors that's important in the immune system are antigens - foreign molecules, and antibodies - molecules that we produce.

当我们讲到免疫系统的时候,会更详细地谈到这种非共价化合反应,因为在免疫系统中,一个重要的配体受体结合反应,就是抗原,即外源分子,与抗体,这个人体自身产生的分子结合

耶鲁公开课 - 生物医学工程探索课程节选

And here the electrons are actually donated, so this becomes F minus.

非平均共价，到这里，电子被完全提供给F，这是氟负离子。

麻省理工公开课 - 固态化学导论课程节选