Pyridine Dimers and Their Low‐Temperature Isomerization: A High‐Resolution Matrix‐Isolation Spectroscopy Study

Author:

Hübner Olaf1,Thusek Jean1,Himmel Hans‐Jörg1ORCID

Affiliation:

1. Inorganic Chemistry Ruprecht-Karls University of Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany

Abstract

AbstractThe bonding between two neutral aromatic compounds, especially small ones, has been controversially debated in the last decades, and terms like “π‐stacking” had to be revised. Surprisingly, despite of many experimental and computational work, there is still no clear consensus about the structure of and the bonding in the pyridine dimer. In this work, for different isomeric forms of the pyridine dimer, the structures and bonding were elucidated by combining high‐resolution matrix‐isolation spectroscopic results with quantum‐chemical calculations. High‐resolution IR spectra of Ne matrices at 4 K containing pyridine were recorded for different concentrations and upon annealing to 10 and 12 K, relying on three isotopologues of pyridine. The spectra show the presence of hydrogen‐bonded, T‐shaped, and stacked forms of weakly‐bound pyridine dimers. Among these, the hydrogen‐bonded isomer is identified as the lowest‐energy form. The results provide for the first time conclusive information about the interaction between two pyridine dimers.

Publisher

Wiley

Subject

General Chemistry,Catalysis

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3