@article {4224,
	title = {Reversible molecular capsules composed of two cavitands linked via an assortment of charged-hydrogen bonds and covalent bonds},
	journal = {Journal of the American Chemical Society},
	volume = {120},
	number = {38},
	year = {1998},
	note = {ISI Document Delivery No.: 125EVTimes Cited: 42Cited Reference Count: 29},
	month = {Sep},
	pages = {9818-9826},
	type = {Article},
	abstract = {Six new cavitand bowls are reported (6, 7, 8, 9, 11, and 12), as are three bis-bowl compounds (4, 13, and 14). Eight new complexes (4.guest, 7C.guest, 8C.guest, 9C.guest, 14.guest, 15.guest, 15C.guest, and 16C.guest) that reversibly encapsulate small molecules are reported. Two or more charged-hydrogen bonds (CHBs) or covalent linkages between the bowls are required to form stable complexes. Guest exchange rates vary from milliseconds to days. Thermodynamically, these complexes display an enthalpy-entropy compensation. The relative stability of complex 3.pyrazine versus complex 3.chloroform is 170000 in nitrobenzene-d(5) at 298 It. Apparent stability constants in nitrobenzene-d(5) at 298 K yield 1.1 x 10(9) M-1 for complex 3.pyrazine. The absolute stability constant for complex 4.pyrazine in nitrobenzene-d(5) at 333 K is 3.5 x 10(6) M-1.},
	keywords = {BINDING, carceplex, CHEMISTRY, ENCAPSULATION, HEMICARCERANDS, HOST-GUEST COMPLEXATION, ORGANIC-MOLECULES, RELEASE, TEMPLATION},
	isbn = {0002-7863},
	url = {<Go to ISI>://000076225200012},
	author = {Chapman, R. G. and Sherman, J. C.}
}
