当前位置: X-MOL 学术CrystEngComm › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Participation of S and Se in hydrogen and chalcogen bonds
CrystEngComm ( IF 3.1 ) Pub Date : 2021-09-08 , DOI: 10.1039/d1ce01046h
Steve Scheiner 1
Affiliation  

This article reviews the history and the current state of knowledge concerning the ability of the heavy chalcogen atoms S and Se, and to some extent Te, to participate in a H-bond as either proton donor or acceptor. These atoms are nearly as effective proton acceptors as O, and only slightly weaker as donor. They can also participate in chalcogen bonds where they act as electron acceptors from a nucleophile. These bonds rapidly strengthen as the chalcogen atom becomes larger: S < Se < Te, or if they are surrounded by electron-withdrawing substituents, and can exceed that of many types of H-bonds. Experimental and computational evidence indicates that both H-bonds and chalcogen bonds involving S and Se occur widely in chemical and biological systems, and play an active role in structure and function.

中文翻译:

S 和 Se 参与氢键和硫属元素键

本文回顾了有关重硫族原子 S 和 Se 以及在某种程度上 Te 作为质子供体或受体参与 H 键的能力的历史和当前知识状态。这些原子几乎与 O 一样有效的质子受体,仅比供体稍弱。它们还可以参与硫属元素键,在那里它们充当来自亲核试剂的电子受体。随着硫族原子变大,这些键会迅速加强:S < Se < Te,或者如果它们被吸电子取代基包围,并且可以超过许多类型的 H 键。实验和计算证据表明,涉及 S 和 Se 的 H 键和硫属键广泛存在于化学和生物系统中,并在结构和功能中发挥积极作用。
更新日期:2021-09-15
down
wechat
bug