Hollinsed W Christopher, Taber Abigail
Department of Chemistry and Biochemistry, James Madison University, Harrisonburg, Virginia 22807, United States.
ACS Omega. 2024 Oct 28;9(45):45342-45347. doi: 10.1021/acsomega.4c07265. eCollection 2024 Nov 12.
In describing the charge on tetraalkylammonium ions, a charge of +1 is usually assigned. This is both the actual charge as well as the "formal charge" which is usually written on the nitrogen atom to indicate the electron deficiency experienced by the nitrogen atom relative to the valence electrons. Nitrogen is the most electronegative atom in the ion. The results in this study show that despite the convention of writing the positive charge on nitrogen, the ion is polarized through the σ bond framework to present four tetrahedral faces, each having close to a full charge of +1 to any anionic species which approach the cation.
在描述四烷基铵离子的电荷时，通常赋予其 +1 的电荷。这既是实际电荷，也是通常写在氮原子上的“形式电荷”，用以表明相对于价电子，氮原子所经历的电子不足。氮是该离子中电负性最强的原子。本研究结果表明，尽管按照惯例将正电荷写在氮上，但该离子通过σ键框架发生极化，呈现出四个四面体面，对于接近该阳离子的任何阴离子物种，每个面都接近带有 +1 的完整电荷。
