title: Xanthene-based ligand with two adjacent beta-diiminato binding sites.
abstract: A novel potential ligand has been designed where two beta-dialdimine units are linked by a xanthene backbone (H2Xanthdim). The synthesis proceeds via a double vinamidinium salt and the products of its hydrolysis (containing eneamine/malonaldehyde units), which were converted into H2Xanthdim via a reaction with 2,3-dimethylaniline. The reaction of H2Xanthdim with n-butyllithium yields ((Et2O)Li)2Xanthdim, which was isolated and crystallized. The crystal structures of both H2Xanthdim and its lithium salt are discussed.
authors.affiliation: Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Str. 2, 12489 Berlin.
authors.forename: Maurice Frederic
authors.initials: MF
authors.lastname: Pilz
authors.forename: Christian
authors.initials: C
authors.lastname: Limberg
authors.forename: Burkhard
authors.initials: B
authors.lastname: Ziemer