The 18-electron rule for main-group alkaline earth octacarbonyl complexes

• 来源期刊: 国家科学评论（英文版）
• 年，卷（期）: 2019,（1）
• 页码范围: 8-9
• 页数: 2页
• 语种: 英文
• DOI: 10.1093/nsr/nwy129

摘要

Elements in the periodic table are classified into s-and p-block main-group elements,d-block transition metals and f-block lanthanides and actinides according to the valence atomic orbitals (AOs).Main-group elements form bonds using their ns and np valence orbitals,following the octet rule—a well-known chemical rule which states that atoms tend to bond in such a way that each atom has a dosed-shell 18-electron configuration like noble gases.Besides one ns and three np valence orbitals,transition metals have additional five (n-1)d orbitals.This leads to the 18-electron rule.