Xanthene-based ligand with two adjacent beta-diiminato binding sites.
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.
Pilz
Maurice Frederic
MF
Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Str. 2, 12489 Berlin.
Limberg
Christian
C
Ziemer
Burkhard
B