Infrared Study of The Hydrogen Bond Complexes Involving 2,3-bis-(2-Pyridyl)-pyzazine and Proton Donors. Comparison with Monofunctional Heterocyclic N-Bases
作者:
Muriel Goethals,
Th. Zeegers-Huyskens,
期刊:
Spectroscopy Letters
(Taylor Available online 1998)
卷期:
Volume 31,
issue 4
页码: 737-746
ISSN:0038-7010
年代: 1998
DOI:10.1080/00387019808007395
出版商: Taylor & Francis Group
关键词: 2,3-bis(2-pyridyl)-pyrazine;proton acceptor ability;infrared spectra
数据来源: Taylor
摘要:
The hydrogen bond complexes between phenols and 2,3-bis(2-pyridyl)-pyrazine BPP) are investigated by infrared spectroscopy in carbon tetrachloride solution. The formation constants for the complexes of 1–1 stoichiometry are higher than those predicted from the pKaof BPP. This is also the case for other N-heteroaromatic bases (pyridazine, 2,2′-bipyrimidine) characterized by two vicinal equivalent nitrogen atoms. The thermodynamic and infrared data of the complexes show that BPP cannot be considered as a proton sponge.
点击下载:
PDF (289KB)
返 回