Two chelating worlds combined – bimetallic complexes of d/f
metal ions with PNP/PNC ligands and Schiff bases
Michal Horni and Marek Necas
michalh@mail.muni.cz
Department of Chemistry, Masaryk University, Kotlarska 2, 61137 Brno, and
CEITEC – Central European Institute of Technology, Kamenice 5, 62500 Brno, Czech
Republic
Bidentate PNP/PNC ligands are well-established in coordination chemistry, mainly
because of their ability to form stable chelate rings and the possibility to vary
chalcogen donor sites as well as organic substituents at P/C atoms.[1, 2]
Similarly,
multidentate salen-type ligands containing oxygen and nitrogen donor sites provide
suitable coordination sphere and steric flexibility for binding transition metal ions.[3]
We decided to combine these two realms of chelating ligands to prepare bimetallic
compounds from transition metal and lanthanide ions. We present here structures and
properties of the bimetallic complexes featuring various ligand combinations and
stoichiometries.
Figure 1. Synthesis of d/f complexes with PNP/PNC and salen-type ligands.
Acknowledgement:
This research has been financially supported by the Ministry of Education, Youth and
Sports of the Czech Republic under the project CEITEC 2020 (LQ1601).
References:
[1] Birdsall, D. J.; Slawin, A. M. Z.; Woollins, J. D., Polyhedron, 2001, 18, 125.
[2] Necas, M.; Foreman, M. R. J.; Marek, J.; Woollins, J. D.; Novosad, J., New J. Chem., 2001, 25,
1256.
[3] Lam, F.; Xu, J.-X.; Chan, K. S., J. Org. Chem., 1996, 61, 8414.
R
3
OH
N
R
4
OH
N
R
4
R
1
2P
NH
PR
2
2
O O
R
1
C
NH
PR
2
2
O O
+ ?or
M1
/ M2