Zq. Pan et al., A novel saddle-form macrocyclic barium complex-synthesis, characterization, mechanism and X-ray crystal structure, POLYHEDRON, 20(24-25), 2001, pp. 2945-2950
A novel saddle-form macrocyclic barium complex was synthesized by cyclo-con
densation of diformylpyridine with [BaL1(ClO4)(2)]. 3H(2)O. In the complex
crystal [BaL2(ClO4)(2)(H2O)]. MeOH .1.5H(2)O, two perchlorate anions are ci
s-coordinated to barium(II), and the coordinated water molecule is located
on the opposite side to the perchlorate anion, H-1 NMR and ES MS spectra we
re used to characterize its structure in methanol solution. The mechanism o
f the reaction was discussed. (C) 2001 Published by Elsevier Science Ltd.