title: Large shape-persistent metal-invertible 15-Nsp(2)-donor-atom macrocycles functioning as trinucleating ligands.
abstract: Reaction of 4,6-dihydrazinopyrimidines with 2,6-dicarbonylpyridines produces, under metal-free or template conditions, a new class of [3 + 3] macrocycles with 15 Nsp(2) donor atoms. Nine Nsp(2) atoms are on the external circumference of the macrocycle. The macrocycle can bind metal ions and produce trinuclear complexes along with the motion of the nine outer Nsp(2) atoms to inner positions (a motion of inversion of the macrocycle).
authors.affiliation: Institut de Science et d'Ingénierie Supramoléculaire, CNRS UMR 7006, 8 Allée Gaspard Monge, Strasbourg, 67083, France. mstadler@unistra.fr
authors.forename: Adrian-Mihail
authors.initials: AM
authors.lastname: Stadler
authors.forename: Ji-Jun
authors.initials: JJ
authors.lastname: Jiang
authors.forename: Hai-Ping
authors.initials: HP
authors.lastname: Wang
authors.forename: Corinne
authors.initials: C
authors.lastname: Bailly