Synthesis and Crystal Structures of Dinuclear Zinc Complexes with the 3,5-Bis(pyridine-2-yl)pyrazolato Ligand

Matthias Westerhausen (1) , Tobias Kloubert , Helmar Görls

1 Institut fuer Anorganische und Analytische Chemie

Zincation of 3,5-bis(pyridine-2-yl)pyrazole with Zn[E(SiMe3)2]2 in tetrahydrofuran yields dimeric 3,5-bis(pyridine-2-yl)pyrazolato zinc bis(trimethylsilyl)amide (E = N, 1) and bis(trimethylsilyl)methanide (E = CH, 2). These complexes crystallize in the space groups P21/n and P ī, respectively. The zinc atoms are in distorted tetrahedral environments. In the solid state the 3,5-bis(pyridine-2-yl)pyrazolato anions act as bridging tridentate bases with one pyridyl group not participating in the coordination behaviour. In solution exchange processes fast on the NMR time scale lead to a single set of resonances for the pyridyl substituents.

Mots clés: Physical Sciences

Matthias Westerhausen, Tobias Kloubert, Helmar Görls. Synthesis and Crystal Structures of Dinuclear Zinc Complexes with the 3,5-Bis(pyridine-2-yl)pyrazolato Ligand. Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, 2010, 636 (13-14), pp.2405. ⟨10.1002/zaac.201000168⟩. ⟨hal-00599870⟩