@article{676b4df67a744ea5a6cb1207bd57b897,
title = "Solid-state structures of sym-dibenzo-16-crown-5 and its derivatives",
abstract = "Solid-state structures of sym-dibenzo-16-crown-5 (1) and five derivatives with one or two substituents on the three-carbon bridge have been determined. The derivatives with three sp3-hybridized carbons include sym-(propyl)dibenzo-16-crown-5 (4), sym-(pentafluorophenoxy)-dibenzo-16-crown-5 (5), and sym-[di(methoxymethyl)]dibenzo-16-crown-5 (6). Structures of two derivatives with sp2-hybridization of the central carbon (7 and 8) were also determined. Twisting of the three-carbon bridge causes one of the terminal methylene groups to be oriented within the polyether cavity.",
keywords = "Crown ether, Solid-state structure, X-ray crystal structure",
author = "Dalley, {N. Kent} and Cannon, {John F.} and Kim, {Jong Seung} and Youngchan Jang and Hanes, {Robert E.} and Bartsch, {Richard A.}",
note = "Funding Information: Fig. 7 Solid-state structure and numbering scheme for sym-(oxo)dibenzo-16-crown-5 (7). (Hydrogen atoms are omitted except for those connected to carbon atoms of the three-carbon bridge.) Fig. 8 Solid-state structure and numbering scheme for (5-methyl-6-oxo)dibenzo-16-crown-5 (8). (Hydrogen atoms are omitted except for those connected to carbon atoms of the three-carbon bridge.) Acknowledgments The research conducted at Texas Tech University was supported by a grant from the Division of Chemical Sciences, Geosciences and Biosciences of the Office of Basic Energy Sciences of the U.S. Department of Energy (Grant DE-FG02-90ER14416). We also thank the National Science Foundation (CRIF MU Grant CHE-1048553) for funds used to purchase the NMR spectrometer. Publisher Copyright: {\textcopyright} Springer Science+Business Media Dordrecht 2014.",
year = "2014",
month = dec,
doi = "10.1007/s10847-014-0389-3",
language = "English",
volume = "80",
pages = "263--271",
journal = "Journal of Inclusion Phenomena and Macrocyclic Chemistry",
issn = "1388-3127",
publisher = "Kluwer Academic Publishers",
number = "3-4",
}