title: Synthesis of an octanuclear Eu(III) cage from Eu(4)(2+): chloride anion encapsulation, luminescence, and reversible MeOH adsorption via a porous supramolecular architecture.
abstract: The octanuclear complex [Eu8L4(1,4-BDC)2Cl8(MeOH)12].4Cl.2MeOH.18H2O (2) was obtained from the reaction of the tetranuclear Eu(III) species [Eu4L2Cl2(OH)4(H2O)4(MeOH)2].2Cl.7MeOH.2H2O (1) and 1,4-H2BDC (H2L = bis(5-bromo-3-methoxysalicylidene)ethylene-1,2-phenylenediamine, 1,4-H2BDC = 1,4-benzenedicarboxylic acid). Both 1 and 2 were structurally characterized by X-ray crystallography, and their luminescence properties were determined. The cagelike structure of 2 encapsulates two chloride anions via MeOH...Cl hydrogen bonding. In the solid state, 2 has an open three-dimensional network with extended channels and is capable of reversible MeOH adsorption.
authors.affiliation: Department of Chemistry and Biochemistry, The University of Texas, 1 University Station A5300, Austin, TX 78712-0165, USA.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Yang
authors.forename: Benjamin P
authors.initials: BP
authors.lastname: Hahn
authors.forename: Richard A
authors.initials: RA
authors.lastname: Jones
authors.forename: Wai-Kwok
authors.initials: WK
authors.lastname: Wong
authors.forename: Keith J
authors.initials: KJ
authors.lastname: Stevenson