title: A barium perchlorate complex with a lateral macrobicycle derived from 4,13-diaza-18-crown-6 containing a pyridine Schiff base spacer.
abstract: In the crystal structure of (perchlorato-kappa(2)O,O'))(28,31,36,39tetraoxa-1,9,17,25,42-pentaazapentacyclo[23.8.5.1(11,15).0(3,8).0(18,23)]nonatriaconta-3,5,7,9,11,13,15,16,18,20,22-undecaene-kappa(8)N(1),N(9), N(17),N(42),O(28),O(31),O(36),O(39))barium(II) perchlorate, [Ba(ClO(4))(C(33)H(41)N(5)O(4))](ClO(4)), the Ba(II) cation is situated in the macrobicyclic cavity, bound to only eight of the nine available donor atoms of the Schiff base macrobicyclic receptor. The pivotal N5 atom does not belong to the coordination sphere of the Ba(II) ion, in spite of its endo conformation with the lone pair directed towards the inside of the cavity. The Ba(II) ion completes its coordination core with two O atoms of one bidentate perchlorate group.
authors: Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira s/n, E-15071 A Coruña, Spain.
authors: Fernando
authors: F
authors: Avecilla
authors: David
authors: D
authors: Esteban
authors: Carlos
authors: C
authors: Platas-Iglesias
authors: Susana
authors: S
authors: Fernández-Martínez
authors: Andres
authors: A
authors: De Blas
authors: Teresa
authors: T
authors: Rodríguez-Blas