Spectroscopic Evidence for Aminomethylene (H−C̈−NH
<sub>2</sub>
)—The Simplest Amino Carbene
作者:André K. Eckhardt、Peter R. Schreiner
DOI:10.1002/anie.201800679
日期:2018.5.4
and UV/Vis spectroscopic data with ab initio coupled cluster computations. After UV irradiation of the matrix aminomethylene rearranges to its isomer methanimine (formaldimine) H2C=NH. Based on our experimental results and computations aminomethylene has a singlet ground state with a reaction barrier of almost 46 kcal mol−1 to methanimine so that H‐tunneling is excluded.
虽然N-杂环卡宾已经充分研究,最简单的aminocarbene,氨基亚甲基H-C-NH 2,尚未光谱分析确证为最新。本文报道了环丙胺的高真空快速热解和随后在12 K的惰性氩气基质中捕获的热解产物的气相制备。集群计算。在紫外线照射基质后,氨基亚甲基重排成其异构体甲胺(甲醛)H 2 C = NH。根据我们的实验结果和计算,氨基亚甲基具有单重态基态,反应势垒几乎为46 kcal mol -1 甲胺,以便排除H隧道效应。