ChemInform Abstract: Synthesis and Conformational Properties of 2-Carboxy-15-crown-5 and Its Cation Complexes

Autor:	Toshio Takahashi, Jesus Mallen, George W. Gokel, Masanori Nishikawa, Dalia Lorenzo, R. K. Khanna
Rok vydání:	1990
Předmět:	Crystallography chemistry.chemical_compound Potassium permanganate Oxygen atom Chemistry Infrared 15-Crown-5 Yield (chemistry) Native state MNDO General Medicine Ring (chemistry)
Zdroj:	ChemInform. 21
ISSN:	0931-7597
DOI:	10.1002/chin.199025198
Popis:	2-Carboxy-15-crown-5 has been prepared by potassium permanganate oxidation in modest yield. Its native conformation has been assessed by using infrared, NMR, and both MM2′ and MNDO calculations. Neutral cation complexes (of the form crown-COOH.MX) of this macrocycle with NaCl, NaBr, NaI, KCl, and CaCl2 have been prepared and studied. It is concluded that the carbonyl oxygen atom is a donor for the ring bound cation, an observation supported by the calculated lowest energy conformation of the non-complexed macrocycle.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::20de862730368444c139499b003fdd08 https://doi.org/10.1002/chin.199025198 Zobrazit plný text záznamu Plný text